Module Name: src
Committed By: roy
Date: Tue Nov 15 10:47:39 UTC 2022
Modified Files:
src/sys/net: if_ethersubr.c
src/sys/netinet: if_arp.c
src/sys/sys: mbuf.h
Log Message:
arp: Validate ARP source hardware address matches Ethernet source
RFC 5227 section 1.1 states that for a DaD ARP probe the sender hardware
address must match the hardware address of the interface sending the
packet.
We can now verify this by checking the mbuf tag PACKET_TAG_ETHERNET_SRC.
This fixes an obsure issue where an old router was sending out bogus
ARP probes.
Thanks to Ryo Shimizu <r...@nerv.org> for the re-implementation.
To generate a diff of this commit:
cvs rdiff -u -r1.322 -r1.323 src/sys/net/if_ethersubr.c
cvs rdiff -u -r1.310 -r1.311 src/sys/netinet/if_arp.c
cvs rdiff -u -r1.235 -r1.236 src/sys/sys/mbuf.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
