Hi,
I have issue with forwarding IPv6 packets into the VM over the SR-IOV VF on
82599 NIC.
On host I use ixgbe driver version 3.17.3, inside VM it is ixgbevf 2.11.3.
I have 3 IPv6 addresses configured on the ethX interface inside the VM.
# ifconfig eth1 | grep 2a00
inet6 addr: 2a00:ffff::2301/64 Scope:Global
inet6 addr: 2a00:ffff::2300/64 Scope:Global
inet6 addr: 2a00:ffff::2/64 Scope:Global
When I try to ping router with 1st ipv6 address it works:
# ping6 -I 2a00:ffff::2 2a00:ffff::1
PING 2a00:ffff::1(2a00:ffff::1) from 2a00:ffff::2 : 56 data bytes
64 bytes from 2a00:ffff::1: icmp_seq=1 ttl=64 time=1.03 ms
64 bytes from 2a00:ffff::1: icmp_seq=2 ttl=64 time=0.683 ms
64 bytes from 2a00:ffff::1: icmp_seq=3 ttl=64 time=0.726 ms
When I try to use 2nd address:
# ping6 -I 2a00:ffff::2300 2a00:ffff::1
PING 2a00:ffff::1(2a00:ffff::1) from 2a00:ffff::2300 : 56 data bytes
^C
--- 2a00:ffff::1 ping statistics ---
4 packets transmitted, 0 received, 100% packet loss, time 2999ms
On the router I see icmp6 packets arriving and router tries to resolve L2
address by sending Neighbour Solicitation, but seems that NS is not reaching
back to the VF (wireshark is not showing anything). On the same time I see NS
packet on the hypervisor (wireshark on PF ethX interface).
As NS packet is multicast packet, it looks to me like only 1st one is learned
in multicast table and next ones are only forwarded to PF.
Any ideas how to troubleshoot this further (i.e. is there a way to dump
Multicast address table)?
Thanks,
Damjan
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