From owner-freebsd-bugs  Mon Jul  8 22:50: 9 2002
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Date: Mon, 8 Jul 2002 22:50:04 -0700 (PDT)
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From: tak@st.rim.or.jp (NAKAMURA Takayuki)
Subject: Re: bin/40365: sockstat -4 does not show some listening IPv4 sockets
Reply-To: tak@st.rim.or.jp (NAKAMURA Takayuki)
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The following reply was made to PR bin/40365; it has been noted by GNATS.

From: tak@st.rim.or.jp (NAKAMURA Takayuki)
To: freebsd-gnats-submit@FreeBSD.org
Cc: tak@st.rim.or.jp
Subject: Re: bin/40365: sockstat -4 does not show some listening IPv4 sockets
Date: Tue, 9 Jul 2002 14:40:45 +0900 (JST)

 Some TCP4 connections are also not shown by sockstat -4.
 This can cause overlooking of some important connections.
 
 In PR bin/40365:
 >When ipv6_ipv4mapping="YES" in rc.conf (i.e. default setting),
 >some IPv4 listening sockets are created as TCP46.
 >So such sockets are not shown by sockstat -4.
 >
 >How-To-Repeat
 >
 >on FreeBSD 4.6.*-RELEASE box:
 >pkg_add apache2-*.tgz, and invoke apache2.
 ># sockstat -4 | grep 80
 >(nothing is shown here.)
 ># sockstat | grep 80
 
 
 On another host (hostb):
 hostb% telnet webhost 80
 
 webhost% sockstat -4 | grep 80
 (nothing is shown here.)
 webhost% sockstat -6 | grep 80
 (A TCP4 connection is shown.)
 
 This looks very strange behavior for me.
 
 -- 
 NAKAMURA Takayuki <tak@st.rim.or.jp>

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