Hi list
I'm trying to get IPv6 traffic to flow over the Open vSwitch, but it always
fails at assigning an IPv6 address (this is a VM, connected to Open vSwitch):
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qlen 1000
inet6 fe80::5054:ff:fed6:46a3/64 scope link tentative dadfailed
valid_lft forever preferred_lft forever
When disabling dad, IPv6 communication works:
sysctl -w net.ipv6.conf.eth0.accept_dad=0
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qlen 1000
inet6 fe80::5054:ff:fed6:46a3/64 scope link
valid_lft forever preferred_lft forever
ping6 google.ch
PING google.ch(mil01s19-in-x1f.1e100.net) 56 data bytes
64 bytes from mil01s19-in-x1f.1e100.net: icmp_seq=1 ttl=58 time=6.22 ms
64 bytes from mil01s19-in-x1f.1e100.net: icmp_seq=2 ttl=58 time=5.16 ms
The VM and the host are both running Ubuntu Server 14.04.1 LTS. Open vSwitch
is at version 2.0.2. On the host only libvirt and kvm is used, nothing more...
Any ideas why dad does not work or how I can debug this thing?
Cheers,
Tobias
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