CVS commit: src/sys/netinet

["Roy Marples" <roy%netbsd.org@localhost>]

Module Name:    src
Committed By:   roy
Date:           Thu Jan 23 17:27:35 UTC 2020

Modified Files:
        src/sys/netinet: if_arp.c

Log Message:
arp: find source address then target address when processing input

This fixes the case where another host having a duplicate ip address
starts using it right away without probing for it's availability.

While here, prefer ifatoia over a strict cast.


To generate a diff of this commit:
cvs rdiff -u -r1.291 -r1.292 src/sys/netinet/if_arp.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.