[Olsr-dev] [PATCH] retry if SmartGW tunnel setup fails

[Daniel]

When started while boot, olsrd quits when SmartGW is enabled with the message

olsrd[1395]: Received netlink error code Cannot assign requested address (-126)
olsrd[1395]: olsrd exit: Cannot initialize gateway tunnels

When restart after boot, olsrd starts up and works as expected.

I wrote this patch to work around this phenomenon, with this olsrd will retry
to setup the gateway tunnels and only exit with a failure if the problem
persists.
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