Linux-Networking Digest #588, Volume #12         Tue, 14 Sep 99 16:13:48 EDT

Contents:
  Re: To double the bandwith on the same subnet (bill davidsen)
  Re: Sub-C networks? (M. Buchenrieder)
  Re: Bay Networks VPN Client (on NT) through Masq - anyone try? ("John Hardin")
  Re: Where can I get a 3C900 NIC driver from? (Jonathan Wilson)
  Re: PCMCIA-Card D-Link 660 does not work with linux (David Hinds)
  Re: nslookup resolves, ping doesn't (Ludger Solbach)

----------------------------------------------------------------------------

From: [EMAIL PROTECTED] (bill davidsen)
Subject: Re: To double the bandwith on the same subnet
Date: 14 Sep 1999 19:56:16 GMT

In article <7rm0mr$k28$[EMAIL PROTECTED]>,
Roberto Posenato <[EMAIL PROTECTED]> wrote:
| I would like to know if anybody has tried to install two network cards
| (NICs) on the same subnet with the goal to double the bandwith of the net
| subsystem.

  It doesn't work that way...

| I have a Linux server with two net cards (each card has its IP number, IPA
| and IPB, and they are on the same subnet) with the goal to  increase the
| bandwith to the net.

  It doesn't work that way.

| I had no problem to configure and to use the two cards.

  Description of problems follows...

| But I noted that only the first card (eth0) is used to "transmit" to the
| network: the input traffic arrives from both the cards, but only the eth0
| routes the output packets.

  Sounds like a problem to me.

| I tried to add a second "default" route to the second cards (route add
| default gw xxx.xxx.xxx.xx eth1), but the result isn't good: all the output
| trafic is routed only by eth1 and eth0 stops to output the packets.
| 
| Any ideas, anyone?

  You didn't think about this one before you did it. What is the
bandwidth limitation on one subnet with a single card? Answer, it's
either the system running out of CPU or the network running out of
bandwidth (probable). Even a small system can saturate 100Mbit these
days, drivers are better and slow systems are last year's state of the
art.

  In either case, if you are on the same subnet with both NICs, the CPU
won't have any more power and the network won't have any more bandwidth.
If you get the routing right so you use both NICs you will then be able
to contend with yourself and create collisions on the net. There won't
be any more bandwidth on the network itself.

  I don't see any case in which a second NIC on the same subnet could
help unless the NIC or driver were broken in some way and not
performing up to the limit imposed by either the CPU or the network.
And in either case the solution is to repair the broken part, not to
try to use more broken parts.

  I trust you take my slight sarcasm in a light way, it was tongue in
cheek rather than nasty in intent. Hope this explains why you are not
going to benefit from what I think you are doing.

-- 
bill davidsen <[EMAIL PROTECTED]>  CTO, TMR Associates, Inc
  I thought I had forgotten how to throw a boomerang, but it's
all coming back to me...


------------------------------

Crossposted-To: comp.os.linux.setup
From: [EMAIL PROTECTED] (M. Buchenrieder)
Subject: Re: Sub-C networks?
Date: Tue, 14 Sep 1999 16:17:54 GMT

[EMAIL PROTECTED] (Andrew Brennan) writes:

>   route add -net 127.0.0.0 works, I can ping 127.0.0.1 ...

Irrelevant. Loopback would work without any NIC, anyways.

>   ifconfig eth0 x.x.189.192 netmask 255.255.255.192 broadcast x.x.189.255
>   also works ... ifconfig eth0 reflects my settings.

This is not a valid IP address for a host on your subnet. x.y.189.192 is 
the network address. Try x.y.189.193 , and reread RFC1878 .


>   route add -net x.x.189.192 takes, I can ping my own box.  I can't ping
>   anything on the local network, though.

>   route add -host x.x.189.249 gw 127.0.0.1 works, I can ping my box ... 

[...]

ARGH.

Michael
-- 
Michael Buchenrieder * [EMAIL PROTECTED] * http://www.muc.de/~mibu
          Lumber Cartel Unit #456 (TINLC) & Official Netscum
    Note: If you want me to send you email, don't munge your address.

------------------------------

From: "John Hardin" <[EMAIL PROTECTED]>
Subject: Re: Bay Networks VPN Client (on NT) through Masq - anyone try?
Date: Tue, 14 Sep 1999 09:01:03 -0700


Robert Wein wrote in message <[EMAIL PROTECTED]>...
>i have the bay networks software and RH5.2, and it doesn't work.  it
>uses IPSEC with the AH protocol (i am probably saying it wrong, but the
>terms are right).

>
>anyway, it relies on a routable source IP and masq doesn't seem to do it
>fully correctly.  i have had suggested to me to install a SOCKS server,
>but haven't tried yet.  i finally gave in right now, and have a 2nd IP
>address for my laptop that uses bay VPN.


IPsec with the AH protocol *cannot* be masqueraded. Sorry. It's possible
that your VPN could be reconfigured to use ESP without AH, which would be
masqueradable. Talk to your VPN administrator.

SOCKS wouldn't help, as it is a proxy for TCP and UDP traffic.

>Some Guy wrote:
>>
>> I've got IP Masq'ing set up but I need to know whether Bay Networks
>> VPN works through ipchains-style masquerading (not HOW, necessarily--I
>> assume if it's possible, there's documentation out there).  I'm
>> encouraged by the fact that it does work through SyGate on an NT
>> server (which works on the same principle as IP masquerading).
>>
>> Thanks for any advance knowledge ;-)
>>
>> Cory
>>
>> P.S. John Hardin - I already tried your ftp link, it didn't work :-(

Really? There's now a mirror in Europe at
ftp://kanon.net/pub/jhardin/masquerade/ip_masq_vpn.hmtl - and I've finally
gotten a response from the LDP HOWTO maintainer and he's going to add the
VPN Masq HOWTO to the main repository, and there will also be a copy
available at the LinuxBerg HOWTO repository as well.

I used the Bay Networks "Extranet" IPsec client in my testing, so I can say
that yes, it does work.

--
 John Hardin KA7OHZ                               [EMAIL PROTECTED]
 pgpk -a finger://gonzo.wolfenet.com/jhardin    PGP key ID: 0x41EA94F5
 PGP key fingerprint: A3 0C 5B C2 EF 0D 2C E5  E9 BF C8 33 A7 A9 CE 76
=======================================================================
  In the Lion
  the Mighty Lion
  the Zebra sleeps tonight...
  Dee de-ee-ee-ee-ee de de de we um umma way!




------------------------------

From: Jonathan Wilson <[EMAIL PROTECTED]>
Subject: Re: Where can I get a 3C900 NIC driver from?
Date: Tue, 14 Sep 1999 19:12:24 GMT

"michael.fengler" wrote:

> On Tue, 14 Sep 1999, JW wrote:
>
> >When I installed Mandrake 6.0 on my computer, I skipped the installation of
> >my network card. Now I want to install it. Windows tells me that it is a
> >"3Com EtherLink XL COMBO 10Mb Ethernet NIC (3C900-COMBO)". After reading the
> >ethernet HOWTO, it seems like I have to recompile my kernel, and add the NIC
> >(as a module?). But I noticed that there is not an ethernet module in the
> >/lib directory called 3C900, or 3C905. Where can I download this driver
> >from? I tried the place listed in the HOWTO, but I got a permission denied
> >error. Is the 900 the same as the 905?
>
> No need to download a driver (I don't use Mandrake, but that shouldn't
> matter). As root goto /usr/src/linux and 'make menuconfig'. Under
> 'Networking options' select (at least) 'TCP/IP networking'. Under
> 'Network device support' select 'Ethernet (10 or 100Mbit)', then '3COM
> cards' and finally '3c590/3c900 series'. Finish menuconfig.
>
> Read /usr/src/linux/README.
>
> 'make dep', 'make zImage', copy /usr/src/linux/System.map and
> /usr/src/linux/arch/<probably i386>/boot/zImage to /boot, edit
> /etc/lilo.conf, run lilo, reboot and be happy :-)

Well, I did what you said, except that  the 3Com 590-905 series was already
checked with  "M", so I maked it "*" instead, to include it in the kernal. When
I got to the end of zImage it gave a message similar to the following:

Root device is (22, 1)
Boot sector 512 bytes
Setup is 3544 bytes
System is 582 kB
System is too big. Try using bzImage or modules.
make[1]: *** [zImage] Error 1
make[1]: Leaving directory '/usr/src/linux-2.2.9/arch/i386/boot'
make:  *** [zImage] Error 2

So I went through the motions again, maked the 3C series with "M", un*ed a few
things I knew I didn't need, and  recived the above message. This is very bad,
since I now have LESS marked than origanally. What do I do know? I have to
reboot this computer to get in to Windows (haven't found a free replacement for
Adobe PageMaker yet), but I'm scared to reboot now. I'm not going to do anything
else 'til someone posts back to this.

BTW, what's this bzImage thing? How am I going to get the "system size" down?

Thanks for the help, keep trying :-)

    JW


------------------------------

From: [EMAIL PROTECTED] (David Hinds)
Crossposted-To: comp.os.linux.portable
Subject: Re: PCMCIA-Card D-Link 660 does not work with linux
Date: 14 Sep 1999 19:17:29 GMT

Uwe Sarnowski ([EMAIL PROTECTED]) wrote:

: With tcpdump on the 192.158.1.1  you can see the arp-request from the
: PCMCIA-PC and the 192.168.1.1-PC sends an arp-reply, (which you can see
: with tcpdump too)
: But on the PCMCIA-PC you see only the arp-request of the PCMCIA-PC and
: no other network traffic.
: 
: Does anybody know, what is wrong?

Interrupts are not being delivered for some reason.  I'd want to know
what kind of laptop this is, and what the PCIC probe messages in your
system log say.

-- Dave Hinds

------------------------------

From: Ludger Solbach <[EMAIL PROTECTED]>
Subject: Re: nslookup resolves, ping doesn't
Date: Tue, 14 Sep 1999 21:09:55 +0200

So here are the "strace"s, first "ping www.zm.bertelsmann.de", second
"www.mit.edu". A diff on both files shows that the problem for the first
ping occurs when the host alias should be identified as such. While for
the second ping DANDELION-PATCH.MIT.EDU is found as the true name of
www.mit.edu, the first ping gets stuck when it should resolve
"www.zm.highway.bertelsmann.de" as the true host name. There must be a
difference between the way the two nameservers respond. What else could
I try to trace this problem to the very core?

Regards,

        Ludger.

---

execve("/bin/ping", ["ping", "www.zm.bertelsmann.de"], [/* 72 vars */])
= 0
brk(0)                                  = 0x805eb0c
open("/etc/ld.so.preload", O_RDONLY)    = -1 ENOENT (No such file or
directory)
open("/etc/ld.so.cache", O_RDONLY)      = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=53678, ...}) = 0
mmap(NULL, 53678, PROT_READ, MAP_PRIVATE, 3, 0) = 0x40015000
close(3)                                = 0
open("/lib/libc.so.6", O_RDONLY)        = 3
fstat(3, {st_mode=S_IFREG|0755, st_size=4190668, ...}) = 0
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\200\203"...,
4096) = 4096
mmap(NULL, 1021404, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x40023000
mprotect(0x40115000, 30172, PROT_NONE)  = 0
mmap(0x40115000, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3,
0xf1000) = 0x40115000
mmap(0x40119000, 13788, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x40119000
close(3)                                = 0
mprotect(0x40023000, 991232, PROT_READ|PROT_WRITE) = 0
mprotect(0x40023000, 991232, PROT_READ|PROT_EXEC) = 0
munmap(0x40015000, 53678)               = 0
personality(PER_LINUX)                  = 0
getpid()                                = 635
brk(0)                                  = 0x805eb0c
brk(0x805ecac)                          = 0x805ecac
brk(0x805f000)                          = 0x805f000
brk(0x8060000)                          = 0x8060000
open("/etc/nsswitch.conf", O_RDONLY)    = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=343, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x40015000
read(3, "# passwd: db files nis\n# shadow:"..., 4096) = 343
read(3, "", 4096)                       = 0
close(3)                                = 0
munmap(0x40015000, 4096)                = 0
open("/etc/ld.so.cache", O_RDONLY)      = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=53678, ...}) = 0
mmap(NULL, 53678, PROT_READ, MAP_PRIVATE, 3, 0) = 0x40015000
close(3)                                = 0
open("/lib/libnss_db.so.2", O_RDONLY)   = 3
fstat(3, {st_mode=S_IFREG|0755, st_size=202226, ...}) = 0
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\200\23"...,
4096) = 4096
mmap(NULL, 22288, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x4011d000
mprotect(0x40122000, 1808, PROT_NONE)   = 0
mmap(0x40122000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3,
0x4000) = 0x40122000
close(3)                                = 0
open("/lib/libdb.so.3", O_RDONLY)       = 3
fstat(3, {st_mode=S_IFREG|0755, st_size=820824, ...}) = 0
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0p<\0\000"...,
4096) = 4096
mmap(NULL, 255708, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x40123000
mprotect(0x40161000, 1756, PROT_NONE)   = 0
mmap(0x40161000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3,
0x3d000) = 0x40161000
close(3)                                = 0
open("/lib/libnss_files.so.2", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0755, st_size=242541, ...}) = 0
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\0\34\0"...,
4096) = 4096
mmap(NULL, 33984, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x40162000
mprotect(0x4016a000, 1216, PROT_NONE)   = 0
mmap(0x4016a000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3,
0x7000) = 0x4016a000
close(3)                                = 0
munmap(0x40015000, 53678)               = 0
open("/var/db/protocols.db", O_RDONLY)  = -1 ENOENT (No such file or
directory)
brk(0x8061000)                          = 0x8061000
open("/etc/protocols", O_RDONLY)        = 3
fcntl(3, F_GETFD)                       = 0
fcntl(3, F_SETFD, FD_CLOEXEC)           = 0
fstat(3, {st_mode=S_IFREG|0644, st_size=595, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x40015000
read(3, "#\n# protocols\tThis file describe"..., 4096) = 595
close(3)                                = 0
munmap(0x40015000, 4096)                = 0
socket(PF_INET, SOCK_RAW, IPPROTO_ICMP) = 3
getuid()                                = 0
setresuid(ruid 4294967295, euid 0, suid 4294967295) = 0
getuid()                                = 0
setuid(0)                               = 0
gettimeofday({937248424, 591001}, NULL) = 0
getpid()                                = 635
open("/etc/resolv.conf", O_RDONLY)      = 4
fstat(4, {st_mode=S_IFREG|0644, st_size=255, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x40015000
read(4, "#\n# /etc/resolv.conf\n#\n# Automat"..., 4096) = 255
read(4, "", 4096)                       = 0
close(4)                                = 0
munmap(0x40015000, 4096)                = 0
socket(PF_UNIX, SOCK_STREAM, 0)         = 4
connect(4, {sun_family=AF_UNIX, sun_path="/var/run/.nscd_socket"}, 110)
= 0
write(4, "\2\0\0\0\4\0\0\0\26\0\0\0", 12) = 12
write(4, "www.zm.bertelsmann.de\0", 22) = 22
read(4, "\2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\377\377\377\377\377\377"...,
32) = 32
close(4)                                = 0
write(2, "ping: ", 6ping: )                   = 6
write(2, "unknown host: www.zm.bertelsmann"..., 35unknown host:
www.zm.bertelsmann.de) = 35
write(2, "\n", 1
)                       = 1
_exit(1)                                = ?

========================================================

execve("/bin/ping", ["ping", "www.mit.edu"], [/* 72 vars */]) = 0
brk(0)                                  = 0x805eb0c
open("/etc/ld.so.preload", O_RDONLY)    = -1 ENOENT (No such file or
directory)
open("/etc/ld.so.cache", O_RDONLY)      = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=53678, ...}) = 0
mmap(NULL, 53678, PROT_READ, MAP_PRIVATE, 3, 0) = 0x40015000
close(3)                                = 0
open("/lib/libc.so.6", O_RDONLY)        = 3
fstat(3, {st_mode=S_IFREG|0755, st_size=4190668, ...}) = 0
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\200\203"...,
4096) = 4096
mmap(NULL, 1021404, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x40023000
mprotect(0x40115000, 30172, PROT_NONE)  = 0
mmap(0x40115000, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3,
0xf1000) = 0x40115000
mmap(0x40119000, 13788, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x40119000
close(3)                                = 0
mprotect(0x40023000, 991232, PROT_READ|PROT_WRITE) = 0
mprotect(0x40023000, 991232, PROT_READ|PROT_EXEC) = 0
munmap(0x40015000, 53678)               = 0
personality(PER_LINUX)                  = 0
getpid()                                = 612
brk(0)                                  = 0x805eb0c
brk(0x805ecac)                          = 0x805ecac
brk(0x805f000)                          = 0x805f000
brk(0x8060000)                          = 0x8060000
open("/etc/nsswitch.conf", O_RDONLY)    = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=343, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x40015000
read(3, "# passwd: db files nis\n# shadow:"..., 4096) = 343
read(3, "", 4096)                       = 0
close(3)                                = 0
munmap(0x40015000, 4096)                = 0
open("/etc/ld.so.cache", O_RDONLY)      = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=53678, ...}) = 0
mmap(NULL, 53678, PROT_READ, MAP_PRIVATE, 3, 0) = 0x40015000
close(3)                                = 0
open("/lib/libnss_db.so.2", O_RDONLY)   = 3
fstat(3, {st_mode=S_IFREG|0755, st_size=202226, ...}) = 0
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\200\23"...,
4096) = 4096
mmap(NULL, 22288, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x4011d000
mprotect(0x40122000, 1808, PROT_NONE)   = 0
mmap(0x40122000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3,
0x4000) = 0x40122000
close(3)                                = 0
open("/lib/libdb.so.3", O_RDONLY)       = 3
fstat(3, {st_mode=S_IFREG|0755, st_size=820824, ...}) = 0
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0p<\0\000"...,
4096) = 4096
mmap(NULL, 255708, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x40123000
mprotect(0x40161000, 1756, PROT_NONE)   = 0
mmap(0x40161000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3,
0x3d000) = 0x40161000
close(3)                                = 0
open("/lib/libnss_files.so.2", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0755, st_size=242541, ...}) = 0
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\0\34\0"...,
4096) = 4096
mmap(NULL, 33984, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x40162000
mprotect(0x4016a000, 1216, PROT_NONE)   = 0
mmap(0x4016a000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3,
0x7000) = 0x4016a000
close(3)                                = 0
munmap(0x40015000, 53678)               = 0
open("/var/db/protocols.db", O_RDONLY)  = -1 ENOENT (No such file or
directory)
brk(0x8061000)                          = 0x8061000
open("/etc/protocols", O_RDONLY)        = 3
fcntl(3, F_GETFD)                       = 0
fcntl(3, F_SETFD, FD_CLOEXEC)           = 0
fstat(3, {st_mode=S_IFREG|0644, st_size=595, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x40015000
read(3, "#\n# protocols\tThis file describe"..., 4096) = 595
close(3)                                = 0
munmap(0x40015000, 4096)                = 0
socket(PF_INET, SOCK_RAW, IPPROTO_ICMP) = 3
getuid()                                = 0
setresuid(ruid 4294967295, euid 0, suid 4294967295) = 0
getuid()                                = 0
setuid(0)                               = 0
gettimeofday({937335374, 788412}, NULL) = 0
getpid()                                = 612
open("/etc/resolv.conf", O_RDONLY)      = 4
fstat(4, {st_mode=S_IFREG|0644, st_size=255, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x40015000
read(4, "#\n# /etc/resolv.conf\n#\n# Automat"..., 4096) = 255
read(4, "", 4096)                       = 0
close(4)                                = 0
munmap(0x40015000, 4096)                = 0
socket(PF_UNIX, SOCK_STREAM, 0)         = 4
connect(4, {sun_family=AF_UNIX, sun_path="/var/run/.nscd_socket"}, 110)
= 0
write(4, "\2\0\0\0\4\0\0\0\f\0\0\0", 12) = 12
write(4, "www.mit.edu\0", 12)           = 12
read(4, "\0\0\0\0\1\0\0\0\30\0\0\0\1\0\0\0\2\0\0\0\4\0\0\0\1\0\0"...,
32) = 32
readv(4, [{"DANDELION-PATCH.MIT.EDU\0", 24}, {"\f\0\0\0", 4},
{"\22\265\0\37", 4}, {"\0\0\0\0\0\0\0\0\0\0\377\377\22\265\0\37", 16}],
4) = 48
read(4, "www.mit.edu\0", 12)            = 12
close(4)                                = 0
getpid()                                = 612
setsockopt(3, SOL_SOCKET, SO_BROADCAST, [1], 4) = 0
getsockopt(3, SOL_SOCKET, SO_SNDBUF, [65535], [4]) = 0
setsockopt(3, SOL_SOCKET, SO_RCVBUF, [49152], 4) = 0
fstat(1, {st_mode=S_IFREG|0644, st_size=5326, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x40015000
rt_sigaction(SIGINT, {0x804bd70, [], SA_RESTART|0x4000000}, {SIG_DFL},
8) = 0
rt_sigaction(SIGALRM, {0x804bc90, [], SA_RESTART|0x4000000}, {SIG_DFL},
8) = 0
gettimeofday({937335374, 793396}, NULL) = 0
sendto(3, "\10\0\273\215d\2\0\0007\336\232N\0\f\0334\10\t\n\v\f\r"...,
64, 0, {sin_family=AF_INET, sin_port=htons(0),
sin_addr=inet_addr("18.181.0.31")}, 16) = 64
rt_sigaction(SIGALRM, {0x804bc90, [], SA_RESTART|0x4000000}, {0x804bc90,
[], SA_RESTART|0x4000000}, 8) = 0
alarm(1)                                = 0
recvfrom(3,
"E\0\0T\375W@\0\360\1\352\331\22\265\0\37\206\34\t\207\0"..., 192, 0,
{sin_family=AF_INET, sin_port=htons(26562),
sin_addr=inet_addr("18.181.0.31")}, [16]) = 84
rt_sigprocmask(SIG_BLOCK, [ALRM], [], 8) = 0
gettimeofday({937335375, 430989}, NULL) = 0
write(1, "PING DANDELION-PATCH.MIT.EDU (18"..., 120PING
DANDELION-PATCH.MIT.EDU (18.181.0.31): 56 data bytes
64 bytes from 18.181.0.31: icmp_seq=0 ttl=240 time=637.593 ms
) = 120
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
recvfrom(3, 0x80603b8, 192, 0, 0xbffff420, 0xbffff2fc) = ? ERESTARTSYS
(To be restarted)
--- SIGALRM (Alarm clock) ---
gettimeofday({937335375, 790505}, NULL) = 0
sendto(3, "\10\0\306\326d\2\0\0017\336\232O\0\f\17\351\10\t\n\v\f"...,
64, 0, {sin_family=AF_INET, sin_port=htons(0),
sin_addr=inet_addr("18.181.0.31")}, 16) = 64
rt_sigaction(SIGALRM, {0x804bc90, [], SA_RESTART|0x4000000}, {0x804bc90,
[], SA_RESTART|0x4000000}, 8) = 0
alarm(1)                                = 0
sigreturn()                             = ? (mask now [])
recvfrom(3,
"E\0\0T\375X@\0\360\1\352\330\22\265\0\37\206\34\t\207\0"..., 192, 0,
{sin_family=AF_INET, sin_port=htons(26562),
sin_addr=inet_addr("18.181.0.31")}, [16]) = 84
rt_sigprocmask(SIG_BLOCK, [ALRM], [], 8) = 0
gettimeofday({937335376, 220767}, NULL) = 0
write(1, "64 bytes from 18.181.0.31: icmp_"..., 6264 bytes from
18.181.0.31: icmp_seq=1 ttl=240 time=430.262 ms
) = 62
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0

...
...

------------------------------


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