[lxc-users] LXD Bridged IPv6

Mon Apr 25 12:30:15 UTC 2016

root at test9001:~# ip -6 r
2604:a880:0:1010::/64 dev eth0  proto kernel  metric 256  expires
3434sec pref medium
fe80::/64 dev eth0  proto kernel  metric 256  pref medium
default via fe80::684e:dcff:feae:fd61 dev eth0  proto ra  metric 1024 
expires 1634sec hoplimit 64 pref medium


root at test9001:~# default via fe80::1 dev eth0  metric 1024  pref medium


after adding the route you suggested I still get:
ip -6 route del default
ip -6 route add default via fe80::1 dev eth0
>From 2604:a880:0:1010:216:3eff:fe87:ff20 icmp_seq=15 Destination
unreachable: Address unreachable

On Mon, Apr 25, 2016, at 07:25 AM, Wojciech Arabczyk wrote:
> What are your route settings in the container?
> ip -6 route show
> 
> Have you tried adding the generic default route via:
> ip -6 route add default via fe80::1 dev eth0
> on the container itself?
> 
> On 25 April 2016 at 13:11, Nick Falcone <nick at nfalcone.net> wrote:
> > In my sysctl.conf I have:
> >
> > net.ipv4.ip_forward=1
> > net.ipv6.conf.all.forwarding=1
> >
> >
> > and just to double check
> >
> > root at lxdtest:~# sysctl net.ipv4.ip_forward
> > net.ipv4.ip_forward = 1
> > root at lxdtest:~# sysctl net.ipv6.conf.all.forwarding
> > net.ipv6.conf.all.forwarding = 1
> >
> > On Mon, Apr 25, 2016, at 03:44 AM, Wojciech Arabczyk wrote:
> >> Are you sure, you have enabled ipv6 forwarding via sysctl?
> >>
> >> On 22 April 2016 at 18:10, Nick Falcone <nick at nfalcone.net> wrote:
> >> > Hello
> >> >
> >> > I have been banging my head up against a wall for a few days now trying
> >> > to get IPv6 to work across my bridged interface for my containers.
> >> >
> >> > I have tried different VPS and dedicated servers as well as versions of
> >> > Ubuntu 14.04, 15.10, and 16.04 to get this working.  The latest test all
> >> > this info is from an Ubuntu 16.04 with the included version of LXD.
> >> >
> >> > First I install and run lxd init, I configure the bridge like so.
> >> >
> >> > lxdbr0    Link encap:Ethernet  HWaddr fe:82:af:f0:5d:ce
> >> >           inet addr:10.195.87.1  Bcast:0.0.0.0  Mask:255.255.255.0
> >> >           inet6 addr: 2604:a880:0:1010::623:2/64 Scope:Global
> >> >           inet6 addr: fe80::40c6:84ff:fe18:22fb/64 Scope:Link
> >> >           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
> >> >           RX packets:294 errors:0 dropped:0 overruns:0 frame:0
> >> >           TX packets:18 errors:0 dropped:0 overruns:0 carrier:0
> >> >           collisions:0 txqueuelen:1000
> >> >           RX bytes:21612 (21.6 KB)  TX bytes:2127 (2.1 KB)
> >> >
> >> > This is my host information too
> >> >
> >> > eth0      Link encap:Ethernet  HWaddr 04:01:d4:50:c4:01
> >> >           inet addr:162.243.200.170  Bcast:162.243.200.255
> >> >           Mask:255.255.255.0
> >> >           inet6 addr: fe80::601:d4ff:fe50:c401/64 Scope:Link
> >> >           inet6 addr: 2604:a880:0:1010::623:1/64 Scope:Global
> >> >           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
> >> >           RX packets:76258 errors:0 dropped:0 overruns:0 frame:0
> >> >           TX packets:8187 errors:0 dropped:0 overruns:0 carrier:0
> >> >           collisions:0 txqueuelen:1000
> >> >           RX bytes:111074998 (111.0 MB)  TX bytes:1230729 (1.2 MB)
> >> >
> >> > I launch and enter the first container it has this info:
> >> >
> >> > eth0      Link encap:Ethernet  HWaddr 00:16:3e:87:ff:20
> >> >           inet addr:10.195.87.69  Bcast:10.195.87.255
> >> >           Mask:255.255.255.0
> >> >           inet6 addr: 2604:a880:0:1010:216:3eff:fe87:ff20/64
> >> >           Scope:Global
> >> >           inet6 addr: fe80::216:3eff:fe87:ff20/64 Scope:Link
> >> >           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
> >> >           RX packets:20 errors:0 dropped:0 overruns:0 frame:0
> >> >           TX packets:294 errors:0 dropped:0 overruns:0 carrier:0
> >> >           collisions:0 txqueuelen:1000
> >> >           RX bytes:2175 (2.1 KB)  TX bytes:25728 (25.7 KB)
> >> >
> >> > so here I can see slaac is successful, but I cannot ping6
> >> > 2604:a880:0:1010::623:1 (the host ipv6), I cannot ping google's public
> >> > dns ipv6 either.  I CAN successfully ping6 2604:a880:0:1010::623:2 my
> >> > bridge public IPv6.
> >> >
> >> > Seems like a routing issue, so on the host I add:
> >> > ip -6 route add 2604:a880:0:1010:216:3eff:fe87:ff20 dev lxdbr0
> >> >
> >> >
> >> > Still not able to ping6 out.  As a side note IPv4 works great.
> >> >
> >> > Am I missing something here? I cannot seem to find a lot of docs on this
> >> > small part.  I thought to look at the demo containers on
> >> > https://linuxcontainers.org/lxd/try-it/ but am unable to ping6 out on
> >> > those, is this just a limitation?
> >> >
> >> > Thanks for any help in advance, would really like to use lxd for a
> >> > project.  Also I do not care to redact these real IPs, they belong to a
> >> > box only used for getting this working then will be destroyed.
> >> > _______________________________________________
> >> > lxc-users mailing list
> >> > lxc-users at lists.linuxcontainers.org
> >> > http://lists.linuxcontainers.org/listinfo/lxc-users
> >> _______________________________________________
> >> lxc-users mailing list
> >> lxc-users at lists.linuxcontainers.org
> >> http://lists.linuxcontainers.org/listinfo/lxc-users
> > _______________________________________________
> > lxc-users mailing list
> > lxc-users at lists.linuxcontainers.org
> > http://lists.linuxcontainers.org/listinfo/lxc-users
> _______________________________________________
> lxc-users mailing list
> lxc-users at lists.linuxcontainers.org
> http://lists.linuxcontainers.org/listinfo/lxc-users