[Users] IPv6 with venet

[Vitaliy Gusev]

Please check  /proc/sys/net/ipv6/conf/all/forwarding

On the Monday 09 July 2007 17:40 Jan Tomasek, wrote:
> 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?
> 

-- 
Vitaliy Gusev