>As you can see the command that I gave was 
>"ifconfig bla0 10.0.5.1 netmask 255.255.255.0"

	see, if it is really so, it is possible that you have issues with your
	driver (i was assuming that you had invocation of route(8) command,
	as i have suggested in previous email).

	"wrong ifa" gets presented when rt->rt_ifa does not meet
	the first argument of rtinit().  have some printfs in rtinit() and
	see what is happening.

itojun