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dom0 bridge on eth1 and ipv6 on domU

 

 

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tomaz.lovrec at x-shells

Oct 16, 2011, 12:16 PM

Post #1 of 1 (1201 views)
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dom0 bridge on eth1 and ipv6 on domU

Hello,

I have a dom0 with 2 interfaces(eth0 connected to WAN, and eth1
connected to LAN), I've got xen configured with network-bridge on eth1
and for some reason, I had to add eth1 to virbr0 manualy with brctrl,
and on that dom0 I have a tun6to4 interface for 6-to-4, which works
perfectly on dom0 and using route I'm passing a /64 over to the domU,
which works as long as I keep pinging domU from dom0 over ipv6. As soon
as I stop pinging the ipv6 connectivity on domU is lost. Configurations
below:


xend-config.sxp:
(network-script 'network-bridge netdev=eth1')
(vif-script vif-bridge)

modified scripts/vif-bridge:
...
case "$command" in
online)
setup_bridge_port "$vif"
add_to_bridge "$bridge" "$vif"
if [ "$vif_ip" = '172.16.0.2' ]; then
ifconfig virbr0 add 2002:5d67:8294:5272::1/128
ip -6 route add 2002:5d67:8294:5272::/64 dev virbr0
fi
;;
...

ifconfig dom0:
eth0 Link encap:Ethernet HWaddr 00:0C:6E:42:D8:25
inet addr:93.103.130.148 Bcast:93.103.255.255
Mask:255.255.0.0
inet6 addr: fe80::20c:6eff:fe42:d825/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:32493502 errors:0 dropped:5252 overruns:0 frame:0
TX packets:19743882 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:3858497404 (3.5 GiB) TX bytes:489259627 (466.5 MiB)
Interrupt:19 Base address:0x2000

eth1 Link encap:Ethernet HWaddr 00:11:6B:94:3B:39
inet addr:172.16.64.1 Bcast:172.16.127.255
Mask:255.255.192.0
inet6 addr: fe80::211:6bff:fe94:3b39/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1446082 errors:0 dropped:0 overruns:0 frame:0
TX packets:1511689 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:893284344 (851.9 MiB) TX bytes:1520468362 (1.4 GiB)

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:22472 errors:0 dropped:0 overruns:0 frame:0
TX packets:22472 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:3064194 (2.9 MiB) TX bytes:3064194 (2.9 MiB)

peth1 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
UP BROADCAST RUNNING NOARP MTU:1500 Metric:1
RX packets:18770651 errors:0 dropped:0 overruns:0 frame:0
TX packets:30483389 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:4138058579 (3.8 GiB) TX bytes:1359972829 (1.2 GiB)
Interrupt:17 Base address:0xc000

tun6to4 Link encap:IPv6-in-IPv4
inet6 addr: 2002:5d67:8294::1/16 Scope:Global
inet6 addr: ::93.103.130.148/128 Scope:Compat
UP RUNNING NOARP MTU:1480 Metric:1
RX packets:95299 errors:0 dropped:0 overruns:0 frame:0
TX packets:94555 errors:312 dropped:0 overruns:0 carrier:312
collisions:0 txqueuelen:0
RX bytes:20810368 (19.8 MiB) TX bytes:9190625 (8.7 MiB)

vif0.0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
UP BROADCAST RUNNING NOARP MTU:1500 Metric:1
RX packets:1819688 errors:0 dropped:0 overruns:0 frame:0
TX packets:1637468 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1948516171 (1.8 GiB) TX bytes:912858301 (870.5 MiB)

vif20.0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
UP BROADCAST RUNNING NOARP MTU:1500 Metric:1
RX packets:178357 errors:0 dropped:0 overruns:0 frame:0
TX packets:452643 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:79072270 (75.4 MiB) TX bytes:264012337 (251.7 MiB)

vif20.1 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
UP BROADCAST RUNNING NOARP MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:34 errors:0 dropped:234863 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:0 (0.0 b) TX bytes:3878 (3.7 KiB)

virbr0 Link encap:Ethernet HWaddr 00:11:6B:94:3B:39
inet addr:172.16.0.1 Bcast:172.16.63.255 Mask:255.255.192.0
inet6 addr: 2002:5d67:8294:5272::1/64 Scope:Global
inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1701219 errors:0 dropped:0 overruns:0 frame:0
TX packets:1823178 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:955644061 (911.3 MiB) TX bytes:1969517278 (1.8 GiB)

xenbr0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
UP BROADCAST RUNNING NOARP MTU:1500 Metric:1
RX packets:176551 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:34750417 (33.1 MiB) TX bytes:0 (0.0 b)

ifconfig domU:

eth0 Link encap:Ethernet HWaddr 00:16:3E:36:DF:9C
inet addr:172.16.0.2 Bcast:172.16.63.255 Mask:255.255.192.0
inet6 addr: 2002:5d67:8294:5272::11/64 Scope:Global
inet6 addr: 2002:5d67:8294:5272::10/64 Scope:Global
inet6 addr: 2002:5d67:8294:5272::2/64 Scope:Global
inet6 addr: 2002:5d67:8294:5272::3/64 Scope:Global
inet6 addr: 2002:5d67:8294:5272::4/64 Scope:Global
inet6 addr: 2002:5d67:8294:5272::5/64 Scope:Global
inet6 addr: 2002:5d67:8294:5272::5743/64 Scope:Global
inet6 addr: 2002:5d67:8294:5272::6/64 Scope:Global
inet6 addr: 2002:5d67:8294:5272::7/64 Scope:Global
inet6 addr: fe80::216:3eff:fe36:df9c/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:453040 errors:0 dropped:0 overruns:0 frame:0
TX packets:178560 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:257725962 (245.7 MiB) TX bytes:81602770 (77.8 MiB)
Interrupt:9

Routing table domU when ping is not running from dom0:

Kernel IPv6 routing table
Destination Next Hop
Flags Metric Ref Use Iface
2002:5d67:8294:5272::/64 ::
U 256 2 0 eth0
fe80::/64 ::
U 256 0 0 eth0
::/0 2002:5d67:8294:5272::1
UG 1 3806 1 eth0
::1/128 ::
U 0 202 1 lo
2002:5d67:8294:5272::/128 ::
U 0 0 1 lo
2002:5d67:8294:5272::2/128 ::
U 0 24576 1 lo
2002:5d67:8294:5272::3/128 ::
U 0 245 1 lo
2002:5d67:8294:5272::4/128 ::
U 0 0 1 lo
2002:5d67:8294:5272::5/128 ::
U 0 0 1 lo
2002:5d67:8294:5272::6/128 ::
U 0 0 1 lo
2002:5d67:8294:5272::7/128 ::
U 0 0 1 lo
2002:5d67:8294:5272::10/128 ::
U 0 0 1 lo
2002:5d67:8294:5272::11/128 ::
U 0 0 1 lo
2002:5d67:8294:5272::5743/128 ::
U 0 0 1 lo
fe80::/128 ::
U 0 0 1 lo
fe80::216:3eff:fe36:df9c/128 ::
U 0 1168 1 lo
ff02::1:ff00:0/128 ff02::1:ff00:0
UC 0 66 0 eth0
ff02::1:ff36:df9c/128 ff02::1:ff36:df9c
UC 0 59 0 eth0
ff00::/8 ::
U 256 0 0 eth0


Routing table dom0 when ping to domU is not running:

Kernel IPv6 routing table
Destination Next Hop
Flags Metric Ref Use Iface
::/96 ::
U 256 1 0 tun6to4
2002:5d67:8294:5272::2/128 2002:5d67:8294:5272::2
UC 0 38 1 virbr0
2002:5d67:8294:5272::/64 ::
U 256 0 0 virbr0
2002:5d67:8294:5272::/64 ::
U 1024 0 0 virbr0
2002::/16 ::
U 256 0 0 tun6to4
2000::/3 ::192.88.99.1
UG 1 2242 0 tun6to4
fe80::200:ff:fe00:0/128 fe80::200:ff:fe00:0
UC 0 152 3 virbr0
fe80::216:3eff:fe36:df9c/128 fe80::216:3eff:fe36:df9c
UC 0 191 3 virbr0
fe80::/64 ::
U 256 0 0 virbr0
fe80::/64 ::
U 256 0 0 vif0.0
fe80::/64 ::
U 256 0 0 peth1
fe80::/64 ::
U 256 0 0 vif20.0
fe80::/64 ::
U 256 0 0 vif20.1
fe80::/64 ::
U 256 0 0 eth0
fe80::/64 ::
U 256 0 0 eth1
fe80::/64 ::
U 256 0 0 tun6to4
::1/128 ::
U 0 3 1 lo
::93.103.130.148/128 ::
U 0 0 1 lo
2002::/128 ::
U 0 0 2 lo
2002:5d67:8294::1/128 ::
U 0 58 1 lo
2002:5d67:8294:5272::/128 ::
U 0 0 2 lo
2002:5d67:8294:5272::1/128 ::
U 0 2559 1 lo
fe80::/128 ::
U 0 0 2 lo
fe80::/128 ::
U 0 0 2 lo
fe80::/128 ::
U 0 0 2 lo
fe80::/128 ::
U 0 0 2 lo
fe80::/128 ::
U 0 0 2 lo
fe80::/128 ::
U 0 0 2 lo
fe80::/128 ::
U 0 0 2 lo
fe80::20c:6eff:fe42:d825/128 ::
U 0 0 1 lo
fe80::211:6bff:fe94:3b39/128 ::
U 0 0 1 lo
ff00::/8 ::
U 256 0 0 virbr0
ff00::/8 ::
U 256 0 0 vif0.0
ff00::/8 ::
U 256 0 0 peth1
ff00::/8 ::
U 256 0 0 vif20.0
ff00::/8 ::
U 256 0 0 vif20.1
ff00::/8 ::
U 256 0 0 eth0
ff00::/8 ::
U 256 0 0 eth1
ff00::/8 ::
U 256 0 0 tun6to4

Routing table domU when ping is runnign from dom0:
Kernel IPv6 routing table
Destination Next Hop
Flags Metric Ref Use Iface
2002:5d67:8294:5272::1/128 2002:5d67:8294:5272::1
UC 0 7 0 eth0
2002:5d67:8294:5272::/64 ::
U 256 2 0 eth0
fe80::/64 ::
U 256 0 0 eth0
::/0 2002:5d67:8294:5272::1
UG 1 3806 1 eth0
::1/128 ::
U 0 202 1 lo
2002:5d67:8294:5272::/128 ::
U 0 0 1 lo
2002:5d67:8294:5272::2/128 ::
U 0 24590 1 lo
2002:5d67:8294:5272::3/128 ::
U 0 245 1 lo
2002:5d67:8294:5272::4/128 ::
U 0 0 1 lo
2002:5d67:8294:5272::5/128 ::
U 0 0 1 lo
2002:5d67:8294:5272::6/128 ::
U 0 0 1 lo
2002:5d67:8294:5272::7/128 ::
U 0 0 1 lo
2002:5d67:8294:5272::10/128 ::
U 0 0 1 lo
2002:5d67:8294:5272::11/128 ::
U 0 0 1 lo
2002:5d67:8294:5272::5743/128 ::
U 0 0 1 lo
fe80::/128 ::
U 0 0 1 lo
fe80::216:3eff:fe36:df9c/128 ::
U 0 1168 1 lo
ff02::1:ff00:0/128 ff02::1:ff00:0
UC 0 120 0 eth0
ff02::1:ff00:2/128 ff02::1:ff00:2
UC 0 45 0 eth0
ff02::1:ff36:df9c/128 ff02::1:ff36:df9c
UC 0 98 0 eth0
ff00::/8 ::
U 256 0 0 eth0

Routing table dom0 when ping is running to domU:

Kernel IPv6 routing table
Destination Next Hop
Flags Metric Ref Use Iface
::/96 ::
U 256 1 0 tun6to4
2002:5d67:8294:5272::2/128 2002:5d67:8294:5272::2
UC 0 140 0 virbr0
2002:5d67:8294:5272::/64 ::
U 256 0 0 virbr0
2002:5d67:8294:5272::/64 ::
U 1024 0 0 virbr0
2002::/16 ::
U 256 0 0 tun6to4
2000::/3 ::192.88.99.1
UG 1 2251 0 tun6to4
fe80::200:ff:fe00:0/128 fe80::200:ff:fe00:0
UC 0 313 0 virbr0
fe80::216:3eff:fe36:df9c/128 fe80::216:3eff:fe36:df9c
UC 0 304 0 virbr0
fe80::/64 ::
U 256 0 0 virbr0
fe80::/64 ::
U 256 0 0 vif0.0
fe80::/64 ::
U 256 0 0 peth1
fe80::/64 ::
U 256 0 0 vif20.0
fe80::/64 ::
U 256 0 0 vif20.1
fe80::/64 ::
U 256 0 0 eth0
fe80::/64 ::
U 256 0 0 eth1
fe80::/64 ::
U 256 0 0 tun6to4
::1/128 ::
U 0 3 1 lo
::93.103.130.148/128 ::
U 0 0 1 lo
2002::/128 ::
U 0 0 2 lo
2002:5d67:8294::1/128 ::
U 0 58 1 lo
2002:5d67:8294:5272::/128 ::
U 0 0 2 lo
2002:5d67:8294:5272::1/128 ::
U 0 2624 1 lo
fe80::/128 ::
U 0 0 2 lo
fe80::/128 ::
U 0 0 2 lo
fe80::/128 ::
U 0 0 2 lo
fe80::/128 ::
U 0 0 2 lo
fe80::/128 ::
U 0 0 2 lo
fe80::/128 ::
U 0 0 2 lo
fe80::/128 ::
U 0 0 2 lo
fe80::20c:6eff:fe42:d825/128 ::
U 0 0 1 lo
fe80::211:6bff:fe94:3b39/128 ::
U 0 0 1 lo
ff00::/8 ::
U 256 0 0 virbr0
ff00::/8 ::
U 256 0 0 vif0.0
ff00::/8 ::
U 256 0 0 peth1
ff00::/8 ::
U 256 0 0 vif20.0
ff00::/8 ::
U 256 0 0 vif20.1
ff00::/8 ::
U 256 0 0 eth0
ff00::/8 ::
U 256 0 0 eth1
ff00::/8 ::
U 256 0 0 tun6to4


I don't know where to go or look further, so any help will be
appreciated.

Regards,
Thomas

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