pf: attempt to handle overlapping group and interface namesstable/14

pf assumes that network groups and network interfaces share a namespace
(that is, a name is unused, a group or an interface, never both a the
same time). Unfortunately this assumption was broken when interface
renaming was introduced.
Attempt to cope with this rather than panicking. Note that this is a
band-aid, not a full solution. The correct fix is for the network stack
to go back to enforcing a single namespace for groups and interfaces.

PR:		297220
Reported by:	Robert Morris
MFC after:	1 week
Sponsored by:	Rubicon Communications, LLC ("Netgate")

(cherry picked from commit d2a5b5a86a92e86f77737273ab4b2e99da63c21d)

0 files changed, 0 insertions, 0 deletions