Lutz Donnerhacke 5c4fe2ac81 service/ipfw: Silence warning on restart
Once the ipfw0 interface has been created, ifconfig(8) create will
throw a warning: ifconfig: create: bad value' when trying to create it
again.

PR:		241013
Submitted by:	Jose Luis Duran
Approved by:	kp
MFC after:	2 weeks
Differential Revision: https://reviews.freebsd.org/D30083
2021-05-03 12:27:20 +02:00
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