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: "allows you to have multiple network interfaces on the same subnet", according to the kernel docs. However, the decision is "based on whether or not the kernel would route a packet from the ARP'd IP out that interface". So that might need to remain set to zero. So worst case, it still wouldn't work, or the DHCP server would get conflicting ARP replies (possibly making the problem worse for the wired interface). - rp_filter = 2: the default in Ubuntu is for strict reverse-path filtering, which might cause us to fail to receive unicast DHCP ACK replies, if we see packets coming to a wireless interface [with a lower metric] which we don't expect. Loose reverse-path filtering should allow this, though it would roll back significant security properties that rp_filter=1 adds. - arp_ignore = 2: an attempt to mitigate the fact that ARP filtering might allow more than interface to reply to the ARP by ensuring that only interfaces configured with the address can reply. (Use this if arp_filter=1 isn't doing the trick and you need to try arp_filter=0.) [1]: based on https://www.kernel.org/doc/Documentation/networking/ip- sysctl.txt -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1664748 Title: wifi connection drops, reconnects every 10 minutes Status in maas package in Ubuntu: Invalid Status in network-manager package in Ubuntu: Invalid Bug description: I recently moved my home DHCP and DNS server over to MAAS (2.1.3 from xenial-updates). Since doing so, I've noticed that my wifi connection drops and reconnects (with corresponding Unity pop-up notifications) exactly every 10 minutes. I suppose this is due to the fact that MAAS sets DHCP leases to 10 minutes by default? Has anyone else noticed this behavior? Is there a suitable workaround? Increasing the DHCP lease time? Using static addresses? Something else? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/maas/+bug/1664748/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
