Date: Thu, 29 Mar 2007 21:39:23 +0000 (UTC) From: Bruce M Simpson <bms@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/netinet in.c Message-ID: <200703292139.l2TLdNH8045109@repoman.freebsd.org>
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bms 2007-03-29 21:39:23 UTC
FreeBSD src repository
Modified files:
sys/netinet in.c
Log:
Fix a bug in IPv4 address configuration exposed by refcounting.
* Join the IPv4 all-hosts multicast group 224.0.0.1 once only;
that is, when an IPv4 address is first configured on an interface.
* Do not join it for subsequent IPv4 addresses as this violates IGMP.
* Be sure to leave the group when all IPv4 addresses have been removed
from the interface.
* Add two DIAGNOSTIC printfs related to the issue.
Further care and attention is needed in this area; it is suggested that
netinet's attachment to the ifnet structure be compartmentalized and
non-implicit.
Bug found by: andre
MFC after: 1 month
Revision Changes Path
1.98 +40 -13 src/sys/netinet/in.c
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