CVSROOT: /cvs
Module name: src
Changes by: d...@cvs.openbsd.org 2011/07/05 19:57:37
Modified files:
sys/netinet : in.c in.h in_pcb.c ip_icmp.c
Log message:
allow /31s on broadcast interfaces (eg ethernet) to work as per rfc3021.
the issue in our kernel was the broadcast address calculated on the /31
caused a ton of checks for use of broadcast addresses to kick in and
prevent one of the two addresses on the /31 from being used.
this diff basically detects if a /31 has been configured and doesnt
configure a broadcast address for it, which makes the ips usable
for normal traffic.
i wrote this so i could interoperate with "carrier" network gear
better, and sthen wants it so he can conserve address space use.
the further special casing of broadcast address handling was from claudio@
ok claudio@ markus@ sthen@ henning@
