[Users] IPv6 with venet

[Jan Tomasek]

Hi,

after upgrade to vzctl version 3.0.18-1dso1 I got new set of 
/etc/vz/dists/scripts/. There were changes in IPv6 code for Debian.

Thanks to those changes now IPv6 works between HW node and VE:

 > staj-dev:~# ping6 2001:718:1:e::23:3005
 > PING 2001:718:1:e::23:3005(2001:718:1:e::23:3005) 56 data bytes
 > 64 bytes from 2001:718:1:e::23:3005: icmp_seq=1 ttl=64 time=0.068 ms

Problem is that I still can not reach VE from outside (staff is box with 
IPv6 support).

 > semik at staff:~$ ping6 2001:718:1:e::23:3005
 > PING 2001:718:1:e::23:3005(2001:718:1:e::23:3005) 56 data bytes

ping does not show anything, it just hangs. In tcpdump on HW node I see:

> 15:38:41.465836 802.1d unknown version
> 15:38:41.498548 IP6 staff.cesnet.cz > 2001:718:1:e::23:3005: ICMP6, echo request, seq 923, length 64
> 15:38:42.498349 IP6 staff.cesnet.cz > 2001:718:1:e::23:3005: ICMP6, echo request, seq 924, length 64
> 15:38:43.462572 802.1d unknown version
> 15:38:43.498152 IP6 staff.cesnet.cz > 2001:718:1:e::23:3005: ICMP6, echo request, seq 925, length 64
> 15:38:43.733136 arp who-has 195.113.233.73 tell 195.113.233.1
> 15:38:44.497951 IP6 staff.cesnet.cz > 2001:718:1:e::23:3005: ICMP6, echo request, seq 926, length 64
> 15:38:45.427653 IP6 fe80::215:faff:fe87:3100 > ip6-allnodes: ICMP6, router advertisement, length 64
> 15:38:45.462453 802.1d unknown version
> 15:38:45.497753 IP6 staff.cesnet.cz > 2001:718:1:e::23:3005: ICMP6, echo request, seq 927, length 64
> 15:38:46.497552 IP6 staff.cesnet.cz > 2001:718:1:e::23:3005: ICMP6, echo request, seq 928, length 64

I was suspecting route problems but routes does look ok. VE:

> root at ipv6-pokus:/# route -6
> Kernel IPv6 routing table
> Destination                                 Next Hop                                Flags Metric Ref    Use Iface
> ::1/128                                     ::                                      U     0      1        1 lo      
> ::1/128                                     ::                                      U     0      0        1 lo      
> 2001:718:1:e::23:3005/128                   ::                                      U     0      13       1 lo      
> 2001:718:1:101:20b:dbff:fe93:5c38/128       2001:718:1:101:20b:dbff:fe93:5c38       UC    0      101       0 venet0  
> fe80::/64                                   ::                                      U     256    0        0 venet0  
> ff00::/8                                    ::                                      U     256    0        0 venet0  
> ::/0                                        ::                                      U     256    0        0 venet0  

HW node:

> staj-dev:/proc/sys/net/ipv6/conf/venet0# route -6
> Kernel IPv6 routing table
> Destination                                 Next Hop                                Flags Metric Ref    Use Iface
> ::1/128                                     ::                                      U     0      8        1 lo      
> 2001:718:1:e::23:3004/128                   ::                                      U     0      926       1 lo      
> 2001:718:1:e::23:3005/128                   ::                                      U     1024   0        0 venet0  
> 2001:718:1:e:213:72ff:fe1b:b97/128          ::                                      U     0      0        1 lo      
> 2001:718:1:e::/64                           ::                                      U     256    302       0 eth0    
> fe80::1/128                                 ::                                      U     0      0        1 lo      
> fe80::213:72ff:fe1b:b97/128                 ::                                      U     0      58       1 lo      
> fe80::/64                                   ::                                      U     256    0        0 eth0    
> fe80::/64                                   ::                                      U     256    0        0 venet0  
> ff02::1/128                                 ff02::1                                 UC    0      327       0 eth0    
> ff00::/8                                    ::                                      U     256    0        0 eth0    
> ff00::/8                                    ::                                      U     256    0        0 venet0  
> ::/0                                        fe80::215:faff:fe87:3100                UGDA  1024   483       0 eth0    

Please, does anyone have any sugestions?

-- 
-----------------------
Jan Tomasek aka Semik
http://www.tomasek.cz/