dhcpcd-discuss

Hi

On Friday 29 July 2016 10:48:59 Ondřej Caletka wrote:
> I'm observing strange issue with dhcpcd. I'm running it via Gentoo's
> OpenRC in separate instance per network adapter.
> 
> Whenever I connect two interfaces to networks offering DHCPv6 (eg. wired
> and wireless at the same time), I get the DHCPv6 address only on the
> interface, for which the dhcpcd is run first. The second and any further
> instance keeps sending SOLICIT6 messages, but never hears the ADV6
> message that the server keeps replying.
> 
> It looks like all ADV6 messages are eaten by the first running instance
> of dhcpcd, which then complains in the log output: "DHCPv6 reply for
> unexpected interface from <router LL address>"
> 
> If dhcpcd is run in master mode, both interfaces receive their DHCPv6
> address normally. However, the issue can be reproduced by running
> another instance in testing mode:
> 
> # dhcpcd -BdT6 eth0
> …
> eth0: soliciting a DHCPv6 lease
> eth0: delaying SOLICIT6 (xid 0xaf829d), next in 0.1 seconds
> eth0: Router Advertisement DAD completed
> eth0: executing `/lib/dhcpcd/dhcpcd-run-hooks' ROUTERADVERT
> eth0: broadcasting SOLICIT6 (xid 0xaf829d), next in 1.1 seconds
> eth0: broadcasting SOLICIT6 (xid 0xaf829d), next in 2.1 seconds
> eth0: broadcasting SOLICIT6 (xid 0xaf829d), next in 4.1 seconds
> 
> In such case the master process complains:
> eth0: DHCPv6 reply received but already bound
> 
> The issue seems to be present at least from version 6.9.0 (I could not
> compile any older) to 6.11.1.
> 
> I hope you will be able to investigate it.

I will look into it when I can.
It may take some time as part of my infra is down as I'm chasing some ethernet 
into my walls atm which I need to working to test a second network card.

Roy