problem z tunelem

[Witek Kręcicki]

mam problem z tunelem do korbank'u
czasem dziala, czasem nie
wyniki :

ip -6 r s
3ffe:8010:88::6/127 via :: dev korbank  proto kernel  metric 256  mtu 1636
rtt 375ms
3ffe:8010:88:2::/64 dev eth0  metric 1024  mtu 1500 rtt 375ms
3f00::/8 via 3ffe:8010:88::6 dev korbank  metric 1024  mtu 1636 rtt 375ms
fe80::/10 dev eth0  proto kernel  metric 256  mtu 1500 rtt 375ms
fe80::/10 via :: dev korbank  proto kernel  metric 256  mtu 1636 rtt 375ms
ff00::/8 dev eth0  proto kernel  metric 256  mtu 1500 rtt 375ms
ff00::/8 dev korbank  proto kernel  metric 256  mtu 1636 rtt 375ms
unreachable default dev lo  metric -1  error -101

---------------------------
ip -6 a s
1: lo: <LOOPBACK,UP> mtu 3924 qdisc noqueue
    inet6 ::1/128 scope host
3: eth0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 100
    inet6 fe80::5054:5ff:fef6:c80b/10 scope link
    inet6 3ffe:8010:88:2::1/64 scope global
7: korbank w NONE: <POINTOPOINT,NOARP,UP> mtu 1636 qdisc noqueue
    inet6 fe80::d54c:cf8a/128 scope link
    inet6 3ffe:8010:88::7/127 scope global

------------------
ip -6 t s
sit0: ipv6/ip  remote any  local any  ttl 64  nopmtudisc
korbank: ipv6/ip  remote 195.117.162.252  local 213.76.207.138  ttl inherit

-----------

ping6 -n 3ffe:8010:88::6
PING 3ffe:8010:88::6(3ffe:8010:88::6) from 3ffe:8010:88::7 : 56 data bytes

--- 3ffe:8010:88::6 ping statistics ---
23 packets transmitted, 0 packets received, 100% packet loss

-----------
ping6 -n 3ffe:8010:88::7
PING 3ffe:8010:88::7(3ffe:8010:88::7) from ::1 : 56 data bytes
64 bytes from 3ffe:8010:88::7: icmp_seq=0 hops=64 time=193 usec
64 bytes from 3ffe:8010:88::7: icmp_seq=1 hops=64 time=147 usec

co to moze byc?
Witek Kręcicki
P.S.
cos jeszcze dziwniejszego :

traceroute6 3ffe:8010:88::6
traceroute to 3ffe:8010:88::6 (3ffe:8010:88::6) from 3ffe:8010:88::7, 30
hops max, 16 byte packets
 1  ipv6-localhost (::1)  0.424 ms  0.317 ms  0.197 ms
 2  ipv6-localhost (::1)  0.339 ms  0.344 ms  0.297 ms
 3  ipv6-localhost (::1)  0.383 ms  0.355 ms  0.227 ms
 4  ipv6-localhost (::1)  0.241 ms  0.272 ms  0.241 ms
itd..........
WK.