On Tue, Aug 9, 2016 at 12:56 PM, Dan Streetman < dan.streetman+launch...@canonical.com> wrote:
> > I understand this scenario; however, what I don't understand is why > > if we're setting mtu 9002 on the underlying devices, why the mtu on the > > "virtual" device (bond0) > > matters vs. the mtu setting of the ipv6 link, especially since this is > ipv6 > > only. > > I think the slave interface mtu will be used. > > > I'm testing this post-up hook which I think covers all of the cases. > > yep that script looks good. > > only thing i can think of is, what if an interface's inet6 section is > specified (and setup) first, before the interface's inet section? e.g. > > auto eth0 > iface eth0 inet6 static > address 2001:dbe::1/64 > mtu 1480 > > iface eth0 inet static > address 10.0.0.1 > mtu 1500 > > would that cause the device mtu to be (re)set to 1500, after the ipv6 > Testing the above scenario works fine. The interface has 1500 mtu, and sysctl shows ipv6 link at 1480. However, if we have a higher mtu onthe ipv6 link, like 4800, then the inet section mtu setting clobbers it and they both end up at 1500. Now, that case I still believe is *invalid* configuration; > mtu had been set? That would reset the ipv6 mtu to 1500. Can the > ordering of inet/inet6 sections always be inet before inet6? > Curtin can provide some ordering here, but ifupdown always runs from top-down. > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1609367 > > Title: > ifupdown does not set ipv6-only large mtu > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/ifupdown/+bug/ > 1609367/+subscriptions > -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1609367 Title: ifupdown does not set ipv6-only large mtu To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ifupdown/+bug/1609367/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
