[mythtv-users] Backend won't start - ipv6 issue?

[Yan Seiner]

My servers reboot automatically at 1AM on Sunday morning.  This has 
always gone off without a hitch until this morning when the backend 
refused to start.

These seem to be the pertinent lines from mythbackend.log - notice the 
Error 9 on the ipv6 interface:

Jan 19 06:34:13 NewMoon mythbackend: mythbackend[16639]: I CoreContext 
serverpool.cpp:399 (listen) Listening on TCP 127.0.0.1:6544
Jan 19 06:34:13 NewMoon mythbackend: mythbackend[16639]: I CoreContext 
serverpool.cpp:399 (listen) Listening on TCP 192.168.128.2:6544
Jan 19 06:34:13 NewMoon mythbackend: mythbackend[16639]: I CoreContext 
serverpool.cpp:399 (listen) Listening on TCP [::1]:6544
Jan 19 06:34:13 NewMoon mythbackend: mythbackend[16639]: E CoreContext 
serverpool.cpp:411 (listen) Failed listening on TCP 
[fe80::20a:cdff:fe17:f4bb%bond0]:6544 - Error 9: The address is not 
available
Jan 19 06:34:13 NewMoon mythbackend: mythbackend[16639]: E CoreContext 
mediaserver.cpp:86 (Init) MediaServer::HttpServer Create Error
Jan 19 06:34:13 NewMoon mythbackend: mythbackend[16639]: I CoreContext 
serverpool.cpp:399 (listen) Listening on TCP 127.0.0.1:6543
Jan 19 06:34:13 NewMoon mythbackend: mythbackend[16639]: I CoreContext 
serverpool.cpp:399 (listen) Listening on TCP 192.168.128.2:6543
Jan 19 06:34:13 NewMoon mythbackend: mythbackend[16639]: I CoreContext 
serverpool.cpp:399 (listen) Listening on TCP [::1]:6543
Jan 19 06:34:13 NewMoon mythbackend: mythbackend[16639]: E CoreContext 
serverpool.cpp:411 (listen) Failed listening on TCP 
[fe80::20a:cdff:fe17:f4bb%bond0]:6543 - Error 9: The address is not 
available
Jan 19 06:34:13 NewMoon mythbackend: mythbackend[16639]: C CoreContext 
main_helpers.cpp:681 (run_backend) Backend exiting, MainServer 
initialization error.

But ifconfig tells me the interface is available:

root at NewMoon:/var/log/mythtv# ifconfig
bond0     Link encap:Ethernet  HWaddr 00:0a:cd:17:f4:bb
           inet addr:192.168.128.2  Bcast:192.168.128.255 Mask:255.255.255.0
           inet6 addr: fe80::20a:cdff:fe17:f4bb/64 Scope:Link
           UP BROADCAST RUNNING MASTER MULTICAST  MTU:1500  Metric:1
           RX packets:233657 errors:2 dropped:0 overruns:2 frame:0
           TX packets:198662 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:0
           RX bytes:131014818 (131.0 MB)  TX bytes:107982506 (107.9 MB)

and it's unchanged for weeks....

Any ideas why this morning it would fail?