Hello,
I am on Mac OS X Mountain Lion (10.

and I have setup a tunnel:
gif0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1280
tunnel inet 192.168.20.2 --> 209.51.181.2
inet6 fe80::ca2a:14ff:fe33:479c%gif0 prefixlen 64 scopeid 0x2
inet6 2001:xxxx:1f11:xxxx::bad:cafe prefixlen 64
stf0: flags=0<> mtu 1280
en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
options=2b<RXCSUM,TXCSUM,VLAN_HWTAGGING,TSO4>
ether c8:2a:14:33:47:9c
inet6 fe80::ca2a:14ff:fe33:479c%en0 prefixlen 64 scopeid 0x4
inet6 2001:xxxx:1f11:xxxx:ca2a:14ff:fe33:479c prefixlen 64 autoconf
inet6 2001:xxxx:1f11:xxxx:c041:6254:50b0:62e0 prefixlen 64 autoconf temporary
inet 192.168.20.2 netmask 0xffffff00 broadcast 192.168.20.255
media: autoselect (1000baseT <full-duplex,flow-control>)
status: active
The connection works for a while:
ping6
www.yahoo.comPING6(56=40+8+8 bytes) 2001:xxxx:1f11:xxxx::bad:cafe --> 2001:4998:44:4::c:9102
16 bytes from 2001:4998:44:4::c:9102, icmp_seq=0 hlim=56 time=135.087 ms
16 bytes from 2001:4998:44:4::c:9102, icmp_seq=1 hlim=56 time=134.229 ms
16 bytes from 2001:4998:44:4::c:9102, icmp_seq=2 hlim=56 time=147.762 ms
And then it breaks:
ping6
www.yahoo.comPING6(56=40+8+8 bytes) 2001:xxxx:1f11:xxxx:c041:6254:50b0:62e0 --> 2001:4998:f00d:1fe::3001
ping6: sendmsg: No route to host
ping6: wrote ds-any-fp3-real.wa1.b.yahoo.com 16 chars, ret=-1
ping6: sendmsg: No route to host
What gives? It seems to still be able to resolve the address but the ping fails.
Help!
adenis