plugins: netlink: fix resync request size alignment with kernel
plugins: netlink: fix resync request size alignment with kernel

For RTM_GETLINK we need a `struct ifinfomsg`, not `struct rtmsg`,
otherwise the kernel will get 8 extra bytes and complain about it.

This patch makes sure to set the correct iface change mask as well, and
increases the debug logs a bit to get a fix on sizes used.  We increase
the recv() buffer 8k -> 64k to make sure we can get all data in one big
swoop.  Plan is to refactor this mess in a later commit.

Signed-off-by: Joachim Wiberg <583c295fd7602c168ad814279bbc3894ba65f5d6@gmail.com>

troglobit/finit,troglobit/finit