Date: Fri, 22 Feb 2008 02:31:23 GMT From: James Snow <snow@teardrop.org> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/120958: 7.x Message-ID: <200802220231.m1M2VNFW044933@www.freebsd.org> Resent-Message-ID: <200802220240.m1M2e2tZ017782@freefall.freebsd.org>
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>Number: 120958
>Category: kern
>Synopsis: 7.x
>Confidential: no
>Severity: non-critical
>Priority: high
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Fri Feb 22 02:40:02 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator: James Snow
>Release: 7.0-RC1 & 7.0-RC2
>Organization:
>Environment:
FreeBSD zfs.teardrop.org 7.0-RC1 FreeBSD 7.0-RC1 #18: Sat Feb 2 15:08:42 UTC 2008 snow@zfs.teardrop.org:/usr/obj/usr/src/sys/GENERIC amd64
>Description:
In sys/netinet/ip_icmp.c at line 625, this bit of code:
if (!in_canforward(ip->ip_src) &&
((ntohl(ip->ip_src.s_addr) & IN_CLASSA_NET) !=
(IN_LOOPBACKNET << IN_CLASSA_NSHIFT))) {
m_freem(m); /* Bad return address */
icmpstat.icps_badaddr++;
goto done; /* Ip_output() will check for broadcast */
}
Causes the system to not respond to any ICMP traffic on any interface configured with a link-local address (169.254/16).
>How-To-Repeat:
ifconfig lo1 create
ifconfig lo1 inet 169.254.1.1 netmask 255.255.0.0
ping 169.254.1.1
>Fix:
Unknown, but I believe bms@freebsd.org has a fix in mind.
>Release-Note:
>Audit-Trail:
>Unformatted:
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