current -r262780 explodes on wlan up

[Poul-Henning Kamp]

Just tried a current kernel -r 262780 on my laptop.

When wlan0 comes up (if_iwn) it explodes with something about witness
and rtentry.c, but it clears the screen before I can get a photo...

Looks trivial to reproduce.

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Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
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