Crashes when adding v6 route on a kernel without v6 multicast support

[kuba-moo]

Hi!

This line leads to a crash:

smcroute/src/conf.c

Line 238 in cd25930

mroute.ttl[vif] = iface->threshold;

when adding a v6 route and kernel has no v6 mcast support. vif is equal to NO_VIF.

[troglobit]

Nice catch, NO_VIF == ALL_VIFS == -1, so that makes sense. We should add a check to the return of iface_get_vif(), I'll get right on it.

[troglobit]

Thank you for taking the time to report this! The issue has been fixed and released as SMCRoute v2.5.7