Re: Restarting IPv6

2023-10-04 Thread Kevin Oberman
Ok, I'll check it out. Thanks! On Wed, Oct 4, 2023 at 2:21 AM Andrey V. Elsukov wrote: > On 04.10.2023 03:02, Kevin Oberman wrote: > > > > I had a problem with one network and had to restart (service > > wpa_supplicant restart wlan0). My Iv4 came up file, but IPv6

Restarting IPv6

2023-10-03 Thread Kevin Oberman
I had a problem with one network and had to restart (service wpa_supplicant restart wlan0). My Iv4 came up file, but IPv6 does not come up. Interface has only link-local address. When I boot to the same AP, it comes up fine. Any idea what I'm missing? -- Kevin Oberman, Part time kid herder

Re: em0: No buffer space available for IPv6 traffic but IPv4 is OK

2023-08-18 Thread Kevin Oberman
st a fix? > > Reboot did not solve, no software updates made, no config changes, just > stop working from one day to the next. > > Thank you. > > -- > José Pérez > Oddly, ENOBUFS is the error I get when my firewall is blocking transmit traffic. There may well be other causes. -- Kevin Oberman, Part time kid herder and retired Network Engineer E-mail: rkober...@gmail.com PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683

Re: IPv6: How does one have the system use a prefix gotten from rtsol with a static host part?

2022-03-11 Thread Kevin Oberman
> ifconfig_bce0_ipv6="inet6 accept_rtadv" > > > Thank You so much. That works here too. I wonder if this deserves a > document somewhere? > It's NOT intuitively obvious that: > a) Order in /etc/rc.conf matters > b) the fe80 address influences the global address > I don't see how 'a' is possible. All rc.conf does is defne a bunch of environmental variables. I don't see any way the order is relevant other than that a later definition of a variable overriding an earlier one. What am I missing here? -- Kevin Oberman, Part time kid herder and retired Network Engineer E-mail: rkober...@gmail.com PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683

Re: Splitting antenna

2021-11-21 Thread Kevin Oberman
ough to work well before splitting. If you have a friend who is a ham radio operator, they could help a lot. -- Kevin Oberman, Part time kid herder and retired Network Engineer E-mail: rkober...@gmail.com PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683

Quenching repeated wpa_supplicant log messages

2021-10-25 Thread Kevin Oberman
a problem indicator? If so, what should I look for. Otherwise, how can I stop these messages from filling my log? -- Kevin Oberman, Part time kid herder and retired Network Engineer E-mail: rkober...@gmail.com PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683

Re: Support for Intel AX200 WiFi 6 card

2020-07-26 Thread Kevin Oberman
Thanks! This is really great news! One question though. The status report shows the iwl driver as supporting "7k/8k/9k/22k" devices. In the insanity of product models vs. chip models vs. marketing names, is the AX200 one of these? -- Kevin Oberman, Part time kid herder and retir

Support for Intel AX200 WiFi 6 card

2020-07-26 Thread Kevin Oberman
a bit. It's just really hard to do anything with a laptop with no WiFi connectivity. Thanks in advance! -- Kevin Oberman, Part time kid herder and retired Network Engineer E-mail: rkober...@gmail.com PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683

Re: ssh command hang

2020-01-08 Thread Kevin Oberman
g top or building large ports with no problems. I do recall a time when my terminal emulator would occasionally freeze, but I have not seen it for quite a while. I use mate-terminal. This was a problem with the emulator, though, and also would lock up local operation as well as ssh sessions. --

Re: TCP Congestion Control

2019-10-24 Thread Kevin Oberman
Have you loaded kernel modules for other algorithms? I believe only newreno is in the default kernel. "man 4 mod_cc" for available modules and other information. -- Kevin Oberman, Part time kid herder and retired Network Engineer E-mail: rkober...@gmail.com PGP F

Re: logs/traces

2019-10-15 Thread Kevin Oberman
Use tcpdump(1) and/or net/wireshark(5). See man tcpdump and pcap-filter for usage details. wireshark can analyze files collected by tcpdump and dissect the packets. It can also do packet capture, itself. -- Kevin Oberman, Part time kid herder and retired Network Engineer E-mail: rkober

Re: Several IPv6 routers and default gateway choice

2019-09-06 Thread Kevin Oberman
On Thu, Sep 5, 2019 at 8:56 PM Victor Sudakov wrote: > Hiroki Sato wrote: > > va> Can any IPv6 unicast or link-local address be configured as an > anycast > > va> address of a router? > > > > Yes. There is no restriction about address scope. > > > > You might want to read RFC 4291, which

Re: [Bug 219428] em network driver broken in current

2019-07-13 Thread Kevin Oberman
nfig igb0 up > > I think the problem is when the network card loses ethernet link and then > errors occurs with non-working interface. > No idea whether it will do the trick, but you might try "service netif restart ibg0". It does a lot more than just down-up of the int

Re: Eliminating IPv6 (?)

2019-06-18 Thread Kevin Oberman
y most OSes including Windows, MacOS, Linux and FreeBSD that IPv6 and IPv4 will be enabled by default. As time goes on, it will likely be more and more likely that disabling IPv6 will become difficult if networks are used at all. It already really requires a custom kernel to completely remove it and,

Re: why rtsold ?

2018-10-08 Thread Kevin Oberman
un SLAAC without rtsold, but it may not prove stable as it is not possible to deal with router changes after network startup. (I do run rtsold on my laptop even though I only need it when not connecting to my home network and that net supports IPv6.) -- Kevin Oberman, Part time kid herde

Re: cxl nic not working after reboot

2018-08-29 Thread Kevin Oberman
On Tue, Aug 28, 2018 at 5:17 PM Marius Halden wrote: > On Wed, Aug 29, 2018, at 01:50, Kevin Oberman wrote: > > On Tue, Aug 28, 2018 at 1:14 PM Marius Halden wrote: > > > > > On Tue, Aug 28, 2018, at 21:34, Navdeep Parhar wrote: > > > > On 8

Re: cxl nic not working after reboot

2018-08-28 Thread Kevin Oberman
On Tue, Aug 28, 2018 at 1:14 PM Marius Halden wrote: > On Tue, Aug 28, 2018, at 21:34, Navdeep Parhar wrote: > > On 8/28/18 12:30 PM, Marius Halden wrote: > > > tx_frames does move, rx_frames is stuck at zero. The following > counters are non-zero and does increase when traffic is sent through

Very frequent "log_in_vain" messages

2018-08-17 Thread Kevin Oberman
be FreeBSD, but it may also be tied to Firefox. Is anyone else seeing this? I'm not sure how common it is to run log_in_vain, so it may be common, but little noticed. Thanks for any clues about this. -- Kevin Oberman, Part time kid herder and retired Network Engineer E-mail: rkober...@gmail.com PGP

Re: usb ethernet adapter does not work after reboot

2018-06-26 Thread Kevin Oberman
given me an obvious and relevant example of why "shutdown -r" should normally be used and "reboot" should not. I don't use NFS, so it has not bitten me. I do recall dealing with similar issue MANY years ago on Solaris systems working with Auspex file servers. Probably dates to

Re: usb ethernet adapter does not work after reboot

2018-06-25 Thread Kevin Oberman
ating. It is unchanged other than fixing wording and formatting since 4.4-lite and probably that was largely unchanged from AT V4. I probably should open a ticket. -- Kevin Oberman, Part time kid herder and retired Network Engineer E-mail: rkober...@gmail.com PGP Fingerprint: D03FB98AFA78E3B78C

Bad outbound performance with Intel 6205 [Taylor Peak] WiFi (IWN)

2018-04-19 Thread Kevin Oberman
load performance. Are others seeing this? Any suggestions for troubleshooting? I don't see much in the way of statistics or diagnostic information on iwn. the man page gives me no clues. Kevin Oberman, Part time kid herder and retired Network Engineer E-mail: rkober...@gmail.com

Re: Calling nxge(4) users

2018-03-25 Thread Kevin Oberman
d off the Ethernet products. -- Kevin Oberman, Part time kid herder and retired Network Engineer E-mail: rkober...@gmail.com PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683 ___ freebsd-net@freebsd.org mailing list https://lists.freebsd.org/m

Re: Looking for a Wireless NIC with 802.11ac or 802.11n support

2018-02-05 Thread Kevin Oberman
On Mon, Feb 5, 2018 at 9:38 PM, Victor Sudakov <v...@mpeks.tomsk.su> wrote: > Eugene Grosbein wrote: > > 06.02.2018 1:37, Kevin Oberman wrote: > > > > > My ancient Intel Centrino (iwn) card does 11n, HOSTAP and 5G. Or, at > least > > > it did

Re: Looking for a Wireless NIC with 802.11ac or 802.11n support

2018-02-05 Thread Kevin Oberman
since FreeBSD 10. It has a really bad time getting along with the wpa_supplicant in 11. It can take many minutes to sync up on re-boot. It also goes "DOWN" very briefly a few times a day, but it comes back up very quickly from these, so I may have a hardware issue on my a

Re: IP packet header visualization software

2017-11-01 Thread Kevin Oberman
On Wed, Nov 1, 2017 at 2:46 PM, DES <3...@inx.su> wrote: > Hello FreeBSD-Net, > > does anybody remember, around year 2004, there was a software application > available (either as port, or package). Unfortunately I do not recall the > application name and I'm not able to find it again, although

Enable 802.11 debug at boot

2017-07-28 Thread Kevin Oberman
d script to run after /usr is mounted and before the network starts? Of is there a better way? Thanks! -- Kevin Oberman, Part time kid herder and retired Network Engineer E-mail: rkober...@gmail.com PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683 __

Re: [Bug 220032] [if_alc] sys/dev/alc/if_alc.c: sleep-under-mutex bugs

2017-06-17 Thread Kevin Oberman
; To submit a patch, use svn to download the source from a repository. Be sure the file in your source directory is the current, unmodified file. Edit the file or files as needed to correct the bug Generate the diff with the command "svn diff path-to-directory-containing-file(s) > diff-file.diff" U

iwn logging "need promiscuous mode update callback"

2017-01-15 Thread Kevin Oberman
5 09:41:13 rogue kernel: need promiscuous mode update callback I don't see how this is even possible as I always thought syslog messages were atomic. Guess not. Again, this is not causing problems that I am aware of, but is a bit disturbing. -- Kevin Oberman, Part time kid herder and retired Networ

Re: is lagg (re+wlan) working on 11.0-RELEASE?

2016-11-16 Thread Kevin Oberman
e, slight differences in hardware revisions can trigger driver issues that don't break things on most variants. And, lest I knew, RealTek did not provide documentation adequate to write a driver and this makes drivers more likely to have subtle bugs. -- Kevin Oberman, Part time kid herder and

Re: iwn(4) association issues in 11-Stable (and maybe RC)

2016-08-24 Thread Kevin Oberman
On Wed, Aug 24, 2016 at 12:45 PM, Glen Barber < <kob6...@gmail.com> g...@freebsd.org> wrote: > On Wed, Aug 24, 2016 at 12:20:57PM -0700, Kevin Oberman wrote: > > <kob6...@gmail.com> > > On Wed, Aug 24, 2016 at 12:03 PM, Glen Barber <g...@freebsd.org> wrote:

Re: iwn(4) association issues in 11-Stable (and maybe RC)

2016-08-24 Thread Kevin Oberman
right now. On Aug 24, 2016 12:46 PM, "Glen Barber" <g...@freebsd.org> wrote: > On Wed, Aug 24, 2016 at 12:20:57PM -0700, Kevin Oberman wrote: > > <kob6...@gmail.com> > > On Wed, Aug 24, 2016 at 12:03 PM, Glen Barber <g...@freebsd.org> wrote: > > >

Re: iwn(4) association issues in 11-Stable (and maybe RC)

2016-08-24 Thread Kevin Oberman
On Tue, Aug 23, 2016 at 10:40 PM, Kevin Oberman < <kob6...@gmail.com> kob6...@gmail.com> wrote: > On Tue, Aug 23, 2016 at 11:48 AM, Adrian Chadd < <kob6...@gmail.com> > adrian.ch...@gmail.com> wrote: > >> Hi, >> >> Compile in IWN_DEBUG and IEEE80

Re: iwn(4) association issues in 11-Stable (and maybe RC)

2016-08-22 Thread Kevin Oberman
On Mon, Aug 22, 2016 at 12:21 PM, Vinícius Zavam < <kob6...@gmail.com> egyp...@googlemail.com> wrote: > > > 2016-08-20 23:07 GMT-03:00 Adrian Chadd <adrian.ch...@gmail.com>: > >> On 20 August 2016 at 19:02, Kevin Oberman <kob6...@gmail.com> wrote: &

Re: iwn(4) association issues in 11-Stable (and maybe RC)

2016-08-20 Thread Kevin Oberman
k, but sometimes it seems hopeless. It seems worse when my phone is the hot spot than with my home router. > > > On Aug 19, 2016 3:48 PM, "Kevin Oberman" <rkober...@gmail.com> wrote: >> >> Lately I have had serious issues with my system successfully associating. >

iwn(4) association issues in 11-Stable (and maybe RC)

2016-08-19 Thread Kevin Oberman
tl[SIOCS80211, op=103, val=0, arg_len=128]: Operation now in progress Aug 19 00:14:53 rogue wpa_supplicant[1634]: wlan0: CTRL-EVENT-SCAN-FAILED ret=-1 retry=1 Is anyone else seeing this? Kevin Oberman, Part time kid herder and retired Network Engineer E-mail: rkober...@gmail.com PG

IWN issue in 11-BETA3

2016-07-31 Thread Kevin Oberman
ervice dhclient restart wlan0" which assigned the address and that resolved hte issue until I reboot. Is this a known issue? Should I open a bug report? This would leave me in a bad position should I ever need to reboot the system remotely or should it crash when I am not near the system. -- Kevi

Re: Slow performance with Intel X540-T2 10Gb NIC

2016-07-22 Thread Kevin Oberman
ions at this point. > > Thank you! > Chris > This sort of problem can be very tricky to diagnose. I'd like to suggest that one of the tool you use should be SIFTR. It does kernel level collection of network statistics and is a loadable module. By default it i IPv4 only. It will have t

Re: ifconfig creates a bogus(?) route

2016-05-29 Thread Kevin Oberman
ault, but 0/0 is the normal representation.) Since most systems have a default gateway defined, this may relate to the issue you are seeing. I'm very unclear what happens with 0/0 if default is not defined. FWIW, here is what I see on this system (10.3-STABLE r299096): Routing tables Internet: Destinati

Re: IPv6, ULAs and FreeBSD

2016-05-27 Thread Kevin Oberman
On Fri, May 27, 2016 at 12:09 AM, Niklaas Baudet von Gersdorff < nikl...@box-fra-01.niklaas.eu> wrote: > Kevin Oberman [2016-05-26 21:11 -0700] : > > > The most valid use is when you can only get a /64 from your provider. > > I got a /112 for each of my virtual server

Re: IPv6, ULAs and FreeBSD

2016-05-26 Thread Kevin Oberman
On Thu, May 26, 2016 at 12:36 PM, Niklaas Baudet von Gersdorff < st...@niklaas.eu> wrote: > I was eventually able to solve this issue. I asked for help on several > mailing lists. So, for reference, here are links to the relevant > threads: > >

Re: [Bug 166255] [net] [patch] It should be possible to disable "promiscuous mode enabled" messages

2016-05-23 Thread Kevin Oberman
at your network is being snooped via a compromised system. While I don't like the idea of hiding these messages at all and think dealing with the issue through syslog.conf more appropriate, at least don't let the setting be changed on a running system! -- Kevin Oberman, Part time kid herder and r

Re: ifconfig with quoted arguments

2016-02-10 Thread Kevin Oberman
ing the old "netmask" al together. ifconfig ue0 inet 192.168.2.176/24 Aside form no longer using a form of addressing that had been obsolete for 20 years, quotation marks won't matter. -- Kevin Oberman, Part time kid herder and retired Network Engineer E-mail: rkober...@gmail.com PGP Finger

Re: Does FreeBSD have sendmmsg or recvmmsg system calls?

2016-01-26 Thread Kevin Oberman
. Kevin Oberman, Part time kid herder and retired Network Engineer E-mail: rkober...@gmail.com PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683 On Tue, Jan 26, 2016 at 7:04 PM, Bruce Evans <b...@optusnet.com.au> wrote: > On Wed, 27 Jan 2016, Gary Jennejohn wrote: > > On Tue, 26

Re: Per-jail private loopback

2015-12-19 Thread Kevin Oberman
eebsd-update calls for a reboot, this is when you need to replace /boot/kernel/kernel with your custom kernel. If the kernel was not changed, you won't be required to reboot, though I do recommend doing so to be sure that no vulnerable code is left running. -- Kevin Oberman, Part time kid herder and retired

Re: Outgoing packets being sent via wrong interface

2015-11-25 Thread Kevin Oberman
Protocol#Redirect> or Cisco <http://www.cisco.com/c/en/us/support/docs/ip/routing-information-protocol-rip/13714-43.html> articles (or Google for many others). -- Kevin Oberman, Part time kid herder and retired Network Engineer E-mail: rkober...@gmail.com PGP Fingerprint: D0

Re: ixl 40G bad performance?

2015-10-25 Thread Kevin Oberman
any way inaccurate. However, it is entirely possible to get misleading results if options not properly selected. -- Kevin Oberman, Part time kid herder and retired Network Engineer E-mail: rkober...@gmail.com PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683

Re: Cannot add an ipv6 route with -interface

2015-10-22 Thread Kevin Oberman
81 ms > > > This router is theoretically useless as it is on the same network than the > FreeBSD one. > > Do you have any idea about this issue? Did I make a mistake or is it a > bug? > > Thanks, > -- > Alarig Le Lay > Take a look at route(8). There are significan

Re: ixl 40G bad performance?

2015-10-19 Thread Kevin Oberman
ion that trigger the power saving > > > modes in different ways > > > > I already have powerd_flags="-a max -b max -n max" in rc.conf, which I > > hope should be enough. > > > I suspect it might not touch the c states, but better check. The safes

Re: Network tuning help needed - asymmetric speed

2015-09-30 Thread Kevin Oberman
rformance. The man page describes it and how to run it quite clearly. For lots of tuning recommendations for truly high performance, see FasterData <http://fasterdata.es.net/>. Unfortunately, since my retirement five years ago, I believe that all work has moved to Linux, so there may not be mu

Re: ssh over WAN: TCP window too small

2015-08-27 Thread Kevin Oberman
performance on high latency links in the bast of cases and, unfortunately, ssh/scp makes it not the best of cases. -- Kevin Oberman, Goat herder and Retired Network Engineer ___ freebsd-net@freebsd.org mailing list https://lists.freebsd.org/mailman

Re: a couple /etc/rc.firewall questions

2015-08-23 Thread Kevin Oberman
it a production service in 2004, IIRC. -- Kevin Oberman, Network Engineer, Retired E-mail: rkober...@gmail.com PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683 ___ freebsd-net@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo

Re: Exposing full 32bit RSS hash from card for ixgbe(4)

2015-08-05 Thread Kevin Oberman
. But without good benchmarking, it's hard to tell. I will say that for large volume data transfers (very large flows), a single CPU solution does work best. But if Barney is going at this with his usual attitude, it's probably not worth it to continue the discussion. -- Kevin Oberman, Network

Re: bugzilla chatter?

2015-08-04 Thread Kevin Oberman
and a reasonable heads-up for problem status. I suspect that once Sean has hit most of the old (some really old) tickets, things will quiet down a fair bit. (But I could be wrong.) I love seeing tickets being taken care of. -- Kevin Oberman, Network Engineer, Retired E-mail: rkober...@gmail.com PGP

Re: rc settings for ipv6 in 9.3?

2015-06-30 Thread Kevin Oberman
put systems in a different /64 and spread them at random around that space if they are statically addressed. (I don't recommend for or against statically addressing, though.) -- Kevin Oberman, Network Engineer, Retired E-mail: rkober...@gmail.com PGP Fingerprint

Re: [BUG?] dhclient sends packets with source IP address that has been deleted

2015-04-08 Thread Kevin Oberman
agree that this is debatable. I think the word notion provides a clear indication of the intent. I know that Windows XP-SP2 behaved this way. I have not looked at anything more recent as that what we ran at work when I last was responsible for running a DHCP server. -- Kevin Oberman, Network

Re: Issue with TCPdump

2015-04-06 Thread Kevin Oberman
any options were positional, I did move -z gzip before -G 500 This is on 10-Stable, so it may have been fixed, but I don't see any relevant updates since 10.0. -- Kevin Oberman, Network Engineer, Retired E-mail: rkober...@gmail.com ___ freebsd-net

Re: tcpdump filter not ignoring jail subnet

2015-03-05 Thread Kevin Oberman
. Especially since there may multiple addresses for a single name. -- Kevin Oberman, Network Engineer, Retired E-mail: rkober...@gmail.com ___ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail

Re: Cant Access Web site

2015-02-25 Thread Kevin Oberman
that in a while, but it was pretty obvious. wireshark can also do the capture directly, but I'll admit that after years of using tcpdump (two of the authors used to sit down the hall from me), I have never tried to use wireshark for packet capture. -- Kevin Oberman, Network Engineer, Retired E

Re: Problems with DNSSEC -- answer in fragmented UDP doesn't work

2015-01-31 Thread Kevin Oberman
On Fri, Jan 30, 2015 at 10:11 PM, David DeSimone ddesim...@verio.net wrote: Kevin Oberman wrote: For ipfw you need something like allow ip from any to me frag. If you want to restrict this to DNS, restrict it to dst-port 53. Unfortunately, UDP fragments only contain the port number

Re: Problems with DNSSEC -- answer in fragmented UDP doesn't work

2015-01-30 Thread Kevin Oberman
? - -- // Lev Serebryakov Does the system have a firewall? If so, is it configured to allow fragments? For ipfw you need something like allow ip from any to me frag. If you want to restrict this to DNS, restrict it to dst-port 53. -- Kevin Oberman, Network Engineer, Retired E-mail: rkober

Re: only lo0 interface inside jail, no default gw

2014-12-16 Thread Kevin Oberman
simplified working with jails. -- R. Kevin Oberman, Network Engineer, Retired E-mail: rkober...@gmail.com ___ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to freebsd-net-unsubscr

Re: DNS resolution problem

2014-12-13 Thread Kevin Oberman
queries to each system to see if one fails when other succeed. Use dig @servr-addr host. -- R. Kevin Oberman, Network Engineer, Retired E-mail: rkober...@gmail.com ___ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd

Re: Should I be using ipv6_activate_all_interfaces or ip6addrctl_policy=ipv6_prefer

2014-08-27 Thread Kevin Oberman
is the precedence of :::0:0/96 which is an odd way of saying IPv4. I generally recommend ipv6_activate_all. Now I fear Peter will explain how I have misread the code. -- R. Kevin Oberman, Network Engineer, Retired E-mail: rkober...@gmail.com ___ freebsd-net

Re: Should I be using ipv6_activate_all_interfaces or ip6addrctl_policy=ipv6_prefer

2014-08-27 Thread Kevin Oberman
with no explicit configuration will auto-configure and run IPv6. The system I am typing this on is entirely auto-configured as are almost all Windows systems running 7 or 8. (Maybe Vista, too. Don't recall.) -- R. Kevin Oberman, Network Engineer, Retired E-mail: rkober...@gmail.com

Re: Should I be using ipv6_activate_all_interfaces or ip6addrctl_policy=ipv6_prefer

2014-08-26 Thread Kevin Oberman
IPv6 running. Firewalls are a common issue. What output do you get from ip6addrctl show? netstat -rnf inet6? -- R. Kevin Oberman, Network Engineer, Retired E-mail: rkober...@gmail.com ___ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman

Server sockets staying in CLOSED for extended periods

2014-03-25 Thread Kevin Oberman
sshd with zombie process on FreeBSD 10.0-STABLE - workaround. -- R. Kevin Oberman, Network Engineer, Retired E-mail: rkober...@gmail.com ___ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send

Re: LAN network performance issues

2014-03-09 Thread Kevin Oberman
not sure what to make of it. You might try installing iperf3 and testing with that. iperf3 is a major rewrite of iperf and is totally incompatible with the older version, so you will need to install iperf3 on all systems I doubt iperf is the issue, but this is a way to check. -- R. Kevin Oberman

Re: LAN network performance issues

2014-03-09 Thread Kevin Oberman
On Sun, Mar 9, 2014 at 11:44 AM, justin victoria j...@yeaguy.com wrote: On 3/9/2014 10:40 AM, Kevin Oberman wrote: You might try installing iperf3 and testing with that. iperf3 is a major rewrite of iperf and is totally incompatible with the older version, so you will need to install

Re: Re[3]: Assymetric NIC performance problem

2013-10-07 Thread Kevin Oberman
are in ports and are best installed on a workstation. The tcpdump output can be used as input to both. (tcpdump -pw FILE -i INTERFACE host ADDRESS can do the job. Then copy the capture to the right place for analysis. But start with configuration and counters for the interface (netstat -i). -- R. Kevin

Re: TSO and FreeBSD vs Linux

2013-08-14 Thread Kevin Oberman
-beta ( a week or two old) and it had similar problems.. only worse.. 9.2 actually sends multiple packets when is doesn't need to.. http://people.freebsd.org/~julian/fbsd9.png Ack! (Sorry) I could have sworn that this had been fixed. Has it been re-broken? -- R. Kevin Oberman, Network

Re: Recommendations for 10gbps NIC

2013-07-29 Thread Kevin Oberman
to Europe and Australia. (Yes, careful tuning was required.) -- R. Kevin Oberman, Network Engineer E-mail: rkober...@gmail.com ___ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail

Re: LACP LAGG device problems

2013-07-21 Thread Kevin Oberman
quite a bit more than $320 per port. And that is ignoring the cost of 100G routing, switching, and optical gear. LAGG is not going away any time soon. I'm sure we will see Nx400G as soon as 400G Ethernet is available. -- R. Kevin Oberman, Network Engineer E-mail: rkober...@gmail.com

Re: Terrible ix performance

2013-07-03 Thread Kevin Oberman
this as he is one of the authors. (The Bugs section is rather long and he might know that it won't be useful in this case, but it has greatly helped me look at performance issues.) -- R. Kevin Oberman, Network Engineer E-mail: rkober...@gmail.com ___ freebsd-net

Re: IPv6 tunnel MTU of 1480 not effective

2013-05-12 Thread Kevin Oberman
specified, and options -4 / -6 like telnet has. Same for traceroute / traceroute6. However, this is an aside.) Steinar Haug, Nethelp consulting, sth...@nethelp.no Sorry to be so hackneyed, but... +1 Sorry that I was unclear (and may have been last time, too). -- R. Kevin Oberman, Network Engineer

Re: IPv6 tunnel MTU of 1480 not effective

2013-05-11 Thread Kevin Oberman
, but I, too, fear that it is a lost cause. Please prove me wrong! -- R. Kevin Oberman, Network Engineer E-mail: rkober...@gmail.com ___ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail

Re: Capture packets before kernel process

2013-04-30 Thread Kevin Oberman
the data very early after it is received by the kernel, but the kernel still must do this as it and only actually can talk to the interface and receive data. -- R. Kevin Oberman, Network Engineer E-mail: rkober...@gmail.com ___ freebsd-net@freebsd.org

Re: ntpd bind() failure: Can't assign requested address

2013-03-12 Thread Kevin Oberman
. There may be more than two. -- R. Kevin Oberman, Network Engineer E-mail: rkober...@gmail.com ___ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to freebsd-net-unsubscr...@freebsd.org

Re: failed to use getifaddrs on geli code

2013-02-16 Thread Kevin Oberman
geom_eli module are not the same as were used to build the kernel you are running. -- R. Kevin Oberman, Network Engineer E-mail: kob6...@gmail.com ___ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe

Re: [PATCH] Add a new TCP_IGNOREIDLE socket option

2013-02-09 Thread Kevin Oberman
are transmitted back to back with NO delay or awareness of congestion. I can confirm that even this limited case can and does sometimes result in packet loss when router queues are inadequate to handle the load. -- R. Kevin Oberman, Network Engineer E-mail: kob6...@gmail.com

Re: how to completely makes an interface down?

2013-01-24 Thread Kevin Oberman
. -- R. Kevin Oberman, Network Engineer E-mail: kob6...@gmail.com ___ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to freebsd-net-unsubscr...@freebsd.org

Re: Low Bandwidth on intercontinental connections

2012-11-21 Thread Kevin Oberman
. It is a detailed guide on moving data developed by the people who have to deal with the huge volumes of Large Hadron Collider data moving across the Atlantic from CERN to researchers in the US. (Note that this is not FreeBSD specific.) -- R. Kevin Oberman, Network Engineer E-mail: kob6...@gmail.com

Re: Wireless Networking Bug(s) in 9.1-RC2 (?)

2012-10-18 Thread Kevin Oberman
is Verizon who will be my provider next month.) -- R. Kevin Oberman, Network Engineer E-mail: kob6...@gmail.com ___ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to freebsd-net

Re: Wireless Networking Bug(s) in 9.1-RC2 (?)

2012-10-16 Thread Kevin Oberman
change with every relocation. in any case, you might try moving the SID into the wpa_supplicant.conf file, but my bet is it is N specific. Paging Adrian. -- R. Kevin Oberman, Network Engineer E-mail: kob6...@gmail.com ___ freebsd-net@freebsd.org mailing

Re: What driver should I use for 'intel centrino wireless-N 2200 BGN' ?

2012-10-09 Thread Kevin Oberman
On Tue, Oct 9, 2012 at 6:23 AM, Denise H. G. darc...@gmail.com wrote: On 2012/10/09 at 00:44, Kevin Oberman kob6...@gmail.com wrote: On Mon, Oct 8, 2012 at 9:36 AM, Andreas Nilsson andrn...@gmail.com wrote: On Mon, Oct 8, 2012 at 2:21 PM, Denise H. G. darc...@gmail.com wrote: Hi list, I

Re: What driver should I use for 'intel centrino wireless-N 2200 BGN' ?

2012-10-08 Thread Kevin Oberman
is trivial, but, should this be the issue, please open a PR to have it added to the source in SVN. -- R. Kevin Oberman, Network Engineer E-mail: kob6...@gmail.com ___ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net

Re: ating 100Gbit transfer rate

2012-07-12 Thread Kevin Oberman
not sure if new proposals are being accepted), see: http://www.es.net/RandD/advanced-networking-initiative/ On Thu, Jul 12, 2012 at 6:43 AM, Kevin Oberman kob6...@gmail.com wrote: On Wed, Jul 11, 2012 at 1:31 PM, Sami Halabi sodyn...@gmail.com wrote: Hi, We have several boxes using 10G cards

Re: ating 100Gbit transfer rate

2012-07-11 Thread Kevin Oberman
is just a mite pricey, though it has dropped tremendously over the past year and a half and I expect it will continue to do so. -- R. Kevin Oberman, Network Engineer E-mail: kob6...@gmail.com ___ freebsd-net@freebsd.org mailing list http://lists.freebsd.org

Re: ifconfig accepting hostname as ipv4 address

2012-06-09 Thread Kevin Oberman
lines and modems. I'll admit that I have mixed feelings about its practicality today, though it does not hurt anything, as far as I can tell. -- R. Kevin Oberman, Network Engineer E-mail: kob6...@gmail.com ___ freebsd-net@freebsd.org mailing list http

Re: Major performance hit with ToS setting

2012-06-02 Thread Kevin Oberman
On Fri, Jun 1, 2012 at 2:48 AM, Lawrence Stewart lstew...@freebsd.org wrote: On 05/31/12 13:33, Kevin Oberman wrote: [snip] I used SIFTR at the suggestion of Lawrence Stewart who headed the project to bring plugable congestion algorithms to FreeBSD and found really odd congestion behavior

Re: Major performance hit with ToS setting

2012-05-30 Thread Kevin Oberman
On Fri, May 25, 2012 at 6:27 AM, Andrew Gallatin galla...@cs.duke.edu wrote: On 05/24/12 18:55, Kevin Oberman wrote: This is,of course, on a 10G interface. On 7.3 there is little Hi Kevin, What you're seeing looks almost like a checksum is bad, or there is some other packet damage.  Do

Re: Major performance hit with ToS setting

2012-05-25 Thread Kevin Oberman
On Fri, May 25, 2012 at 6:27 AM, Andrew Gallatin galla...@cs.duke.edu wrote: On 05/24/12 18:55, Kevin Oberman wrote: This is,of course, on a 10G interface. On 7.3 there is little Hi Kevin, What you're seeing looks almost like a checksum is bad, or there is some other packet damage.  Do

Major performance hit with ToS setting

2012-05-24 Thread Kevin Oberman
=4.1942 Mbps 0.5000 MB / 1.00 sec =4.1942 Mbps This is,of course, on a 10G interface. On 7.3 there is little difference between the two. We are using cubic CC on the 8.2 system. -- R. Kevin Oberman, Network Engineer E-mail: kob6...@gmail.com

Re: Major performance hit with ToS setting

2012-05-24 Thread Kevin Oberman
On Thu, May 24, 2012 at 4:43 PM, Bjoern A. Zeeb bzeeb-li...@lists.zabbadoz.net wrote: On 24. May 2012, at 22:55 , Kevin Oberman wrote: When we set the ToS bits for less than best effort (also called scavenger) on packets (ToS=32), performance on FreeBSD 8.2 is terrible. It was as good as best

Re: Controlling queue delays

2012-05-08 Thread Kevin Oberman
. This assumes that it actually works as advertized, but the authors are unlikely to have published this without thorough analysis and testing. They are, after all, among the leading TCP experts in the world. -- R. Kevin Oberman, Network Engineer E-mail: kob6...@gmail.com

Re: Stateful IPFW - too many connections in FIN_WAIT_2 or LAST_ACK states

2012-04-20 Thread Kevin Oberman
to use stateful TCP filtering, it is probably best to do it in the manner shown in the ipfw(8) man page under DYNAMIC RULES. This is very different from the way you did it. -- R. Kevin Oberman, Network Engineer E-mail: kob6...@gmail.com ___ freebsd-net

Re: Stateful IPFW - too many connections in FIN_WAIT_2 or LAST_ACK states

2012-04-17 Thread Kevin Oberman
to trivial DOS (often of yourself) by filling the dynamic rule tables. Generally, for client systems, stateful UDP makes sense, but I generally don't understand why people choose the more complex, slower, and potentially disruptive stateful rules for TCP. -- R. Kevin Oberman, Network Engineer E-mail

Re: Stateful IPFW - too many connections in FIN_WAIT_2 or LAST_ACK states

2012-04-17 Thread Kevin Oberman
On Tue, Apr 17, 2012 at 12:58 PM, Michael Sierchio ku...@tenebras.com wrote: On Tue, Apr 17, 2012 at 12:48 PM, Kevin Oberman kob6...@gmail.com wrote: But I do have to ask why you find statefull rules for outgoing TCP connections desirable? Why not: 00101 allow tcp from me to any established

Re: lagg problems on diskless client

2012-04-03 Thread Kevin Oberman
...@berentweb.com wrote: On Tue, Apr 3, 2012 at 7:46 PM, Kevin Oberman kob6...@gmail.com wrote: On Tue, Apr 3, 2012 at 4:51 AM, Beeblebrox zap...@berentweb.com wrote: Slightly different point of view: Under this scenario of dikless clients having dual NICs would CRAP be a choice to consider? From what I

Re: firewall stuck

2012-03-24 Thread Kevin Oberman
On Sat, Mar 24, 2012 at 6:30 AM, nyoman.b...@gmail.com nyoman.b...@gmail.com wrote: On Thu, Mar 15, 2012 at 11:47 AM, Kevin Oberman kob6...@gmail.com wrote: Please don't top post. It makes following the thread very difficult. (Yes, I know too many MUAs make this difficult.)   On Wed, Mar 14

Re: Use of network_interfaces in rc.conf

2012-03-15 Thread Kevin Oberman
can't do: ifconfig_em0=DHCP ifconfig_em0=mediaopt half-duplex That will not do DHCP, so hte interface will not come up. Of course, you can concatinate a second entry to the first using normal sh syntax. -- R. Kevin Oberman, Network Engineer E-mail: kob6...@gmail.com

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