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(usagi-users 00408) anormal route
- To: "(Lista) usagi-users@xxxxxxxxxxxxxx" <usagi-users@xxxxxxxxxxxxxx>, "(Lista) users@xxxxxxxx" <users@xxxxxxxx>
- Subject: (usagi-users 00408) anormal route
- From: Juan Fco Rodriguez Hervella <jrh@xxxxxxxxxx>
- Date: Thu, 19 Apr 2001 13:24:06 +0200
- Reply-to: usagi-users@xxxxxxxxxxxxxx
- Sender: jrh@xxxxxxxxxxxxxxxxxx
Hi:
I trying to ping6 www.kame.net through a 6to4 tunnel in linux.
If I do the ping6 in the machine with the 6to4 tunnel, all is ok,
but if I try to do the ping6 in another host directly connected
with the 6to4 router, I receive no answer.
The packets are received by the 6to4 router, and the 6to4 router
sends them through the sit0 interface:
2002:a375:8b2c:1f:2c0:26ff:fea0:c15c >
3ffe:501:4819:2000:280:adff:fe71:81fc icmpv6: echo request
3ffe:501:4819:2000:280:adff:fe71:81fc >
2002:a375:8b2c:1f:2c0:26ff:fea0:c15c icmpv6: echo reply
3ffe:501:4819:2000:280:adff:fe71:81fc >
2002:a375:8b2c:1f:2c0:26ff:fea0:c15c icmpv6: echo reply
2002:a375:8b2c:1f:2c0:26ff:fea0:c15c >
3ffe:501:4819:2000:280:adff:fe71:81fc icmpv6: echo request
If I examined the routing table of 6to4 box, I realize that
when the ping6 is running, a new route appears:
2002:a375:8b2c:1f:2c0:26ff:fea0:c15c/128
2002:a375:8b2c:1f:2c0:26ff:fea0:c15c UAC 0 3 0 sit0
This is wrong, because the route that should by applied should be:
2002:a375:8b2c:1f::/64
:: UA 256 0 0 eth0
If I stop the ping6, the route disapears a few time later.
I am using zebra-ripngd, that announces a default route for the link,
but I have killed the daemons and it is still happening.
Why is this occurss ??
Why does it appear that route, which blocks the reply ??
If it is of interest, I attach my interfaces and routing table (of 6to4
router):
Thanks for your time...
eth0 Link encap:Ethernet HWaddr 00:C0:26:A3:5D:F6
inet addr:163.117.139.44 Bcast:163.117.139.255
Mask:255.255.255.0
inet6 addr: 3ffe:3328:1:1f::a375:8b2c/64 Scope:Global
inet6 addr: fe80::2c0:26ff:fea3:5df6/10 Scope:Link
inet6 addr: 2002:a375:8b2c:1f::a375:8b2c/64 Scope:Global
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:23809 errors:0 dropped:0 overruns:0 frame:0
TX packets:36521 errors:0 dropped:0 overruns:0 carrier:0
collisions:1278 txqueuelen:100
Interrupt:10
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:16144 Metric:1
RX packets:133 errors:0 dropped:0 overruns:0 frame:0
TX packets:133 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
sit0 Link encap:IPv6-in-IPv4
inet6 addr: ::163.117.139.44/96 Scope:Compat
inet6 addr: 2002:a375:8b2c::1/64 Scope:Global
inet6 addr: ::127.0.0.1/96 Scope:Unknown
UP RUNNING NOARP MTU:1480 Metric:1
RX packets:251 errors:0 dropped:0 overruns:0 frame:0
TX packets:345 errors:236 dropped:0 overruns:0 carrier:236
collisions:0 txqueuelen:0
root@alacran:~# netstat -rn -A inet6
Kernel IPv6 routing table
Destination Next
Hop Flags Metric Ref Use Iface
::1/128
:: U 0 3 0 lo
::127.0.0.1/128
:: U 0 0 0 lo
::163.117.139.44/128
:: U 0 0 0 lo
2002:a375:8b2c::1/128
:: U 0 6 0 lo
2002:a375:8b2c::/64
:: UA 256 0 0 sit0
2002:a375:8b2c:1f::a375:8b2c/128
:: U 0 0 0 lo
2002:a375:8b2c:1f::a375:8ba6/128
2002:a375:8b2c:1f::a375:8ba6 UAC 0 17 1 eth0
2002:a375:8b2c:1f::/64
:: UA 256 3 0 eth0
2002:a375:8b2c:1f::/64
:: UA 256 0 0 sit0
3ffe:3328:1:1f::a375:8b2c/128
:: U 0 20 0 lo
3ffe:3328:1:1f::/64
:: UA 256 0 0 eth0
3ffe::/16
::131.107.152.32 UG 1024 852 0 sit0
2000::/3
::131.107.152.32 UG 1024 204 0 sit0
fe80::2c0:26ff:fea3:5df6/128
:: U 0 24 0 lo
fe80::/10
:: UA 256 0 0 eth0
fe80::/10
:: UA 256 0 0 sit0
ff02::1/128
ff02::1 UAC 0 1 1 eth0
ff00::/8
:: UA 256 0 0 eth0
ff00::/8
--
*********************************
Juan F. Rodriguez Hervella
Universidad Carlos III de Madrid
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