[Expired for network-manager (Ubuntu) because there has been no activity
for 60 days.]
** Changed in: network-manager (Ubuntu)
Status: Incomplete => Expired
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Hi Dustin,
I would like to know which version of Ubuntu are you running on your
laptop? Specifically, I want to know what's behaving as your dhcp
client, is it dhclient or systemd-networkd?
Requesting IP addresses from two interfaces on the same machine to one
DHCP server is sometimes causing
So I tried all three of those sysctl's and the problem is still
manifesting itself (every 10 minutes, Network Mananger pops up a
disconnected/reconnected message.
Moreover, I'll not that this problem does NOT exist in 14.04 (tested
with the same hardware, same wifi+ethernet, using a 14.04.5
One last note on this. It might be possible to get this setup to work
(on the client) using the following sysctl changes:
net.ipv4.conf.all.arp_filter = 1 (or 0)
net.ipv4.conf.all.rp_filter = 2
net.ipv4.conf.all.arp_ignore = 2
This is completely untested. But in theory[1]:
- arp_filter = 1:
After further investigation, this is also invalid for MAAS.
The root cause of this issue is: two separate interfaces requesting an
address from the same DHCP server cannot be supported. (At least, not
without some serious sysctl hacking at a minimum, but I'm not even sure
about that.)
If you
** Changed in: maas (Ubuntu)
Status: Opinion => Invalid
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https://bugs.launchpad.net/bugs/1664748
Title:
wifi connection drops, reconnects
Marking 'Opinion' for MAAS since we might want to discuss if it's
possible to better balance renewal times for clients on unreliable
networks.
I do not believe this is a bug in the ISC DHCP client or NetworkManager,
so marking 'Invalid' for NM.
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Normal behavior is that the DHCP client begins to renew the lease half
way through the lease time. So, for MAAS's 10 minute lease, it should be
after ~5 minutes. After ~85-90% of the time (the rebind time), the
client will give up on the lease and try to get a new one, under the
assumption that
>From the ML
lease {
interface "enp0s25";
fixed-address 10.1.8.227;
option subnet-mask 255.255.255.0;
option dhcp-lease-time 2592000;
option routers 10.1.8.1;
option dhcp-message-type 5;
option dhcp-server-identifier 10.1.8.1;
option domain-name-servers 8.8.8.8,8.8.4.4;
option
^ That is, please run that command on the client so we can see the full
transaction history.
It's hard to tell if the DHCP client isn't renewing fast enough, or
possibly it's trying to renew but for some reason the server no longer
recognizes the lease.
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cat $(ps auxw | grep dhclient | grep -o '\-lf.*' | awk '{ print $2 }')
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https://bugs.launchpad.net/bugs/1664748
Title:
wifi connection drops,
@ Dustin,
Can you attach your dhcpd.conf or at least the relevant sections to see
how this hostmap was configured ?
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** Also affects: network-manager (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1664748
Title:
wifi
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