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Date: Fri, 13 Aug 2004 11:50:24 GMT
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To: freebsd-bugs@FreeBSD.org
From: Mark Andrews <Mark_Andrews@isc.org>
Subject: Re: kern/70399: ipfilter breaks IPv6 path mtu discovery
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The following reply was made to PR kern/70399; it has been noted by GNATS.

From: Mark Andrews <Mark_Andrews@isc.org>
To: freebsd-gnats-submit@FreeBSD.org, Mark_Andrews@isc.org
Cc:  
Subject: Re: kern/70399: ipfilter breaks IPv6 path mtu discovery
Date: Fri, 13 Aug 2004 21:44:00 +1000

 In sys/contrib/ipfilter/netinet/fil.c replace the m_pullup() call with
 
                  if (len > MHLEN && (m->m_flags & M_PKTHDR) != 0)
                          m = m_defrag(m, M_DONTWAIT);
                  else
                          m = m_pullup(m, len);
 
 as m_pullup() will always fail if len > MHLEN.