David Greenman
c655b7c4f4
Added proper splnet protection while modifying the interface address list.
This fixes a panic that occurs when ifconfig ioctl(s) were interrupted by IP traffic at the wrong time - resulting in a NULL pointer dereference. This was originally noticed on a FreeBSD 1.0 system, but the problem still exists in current sources.
Description
freebsd with flexible iflib nic queues
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