Mateusz Guzik ffd2a1ec23 inet6: protect address manipulation with a lock
This is a total hack/bare minimum which follows inet4.

Otherwise 2 threads removing the same address can easily crash.

Reviewed by:	kp
Sponsored by:	Rubicon Communications, LLC ("Netgate")
Differential Revision:	https://reviews.freebsd.org/D39317
2023-04-03 04:14:01 -04:00
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