iproute2: ip: RTNETLINK answers: No route to host

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Sample error:

/etc # rc-service net.eth0 restart
* Caching service dependencies ...       [ ok ]
* Unmounting network filesystems ...     [ ok ]
* Stopping named ...                     [ ok ]
* Stopping apache2 ...                   [ ok ]
* Bringing down interface eth0
* Bringing up interface eth0
*   91.23.215.207/24 ...                 [ ok ]
*   2001:31d0:2:2aFF:FF:FF:FF:FF ...     [ ok ]
*   Adding routes
*     default via 91.23.215.254 ...      [ ok ]
*     default via 2001:31d0:2:2aFF:0:0:0:0 ...
RTNETLINK answers: No route to host            [ !! ]
*   Waiting for tentative IPv6 addresses to complete DAD (5 seconds) ....   [ ok ]

* Starting named ...
* Checking named configuration ...      [ ok ]
* Mounting network filesystems ...      [ ok ]
* Starting apache2 ...                  [ ok ]