From owner-freebsd-net  Fri Jan 11 11:37:27 2002
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Date: Fri, 11 Jan 2002 11:39:21 -0800
To: freebsd-net@freebsd.org
From: Anand Narayanan <anandn@windriver.com>
Subject: Issue regarding SO_REUSEPORT and SO_REUSEADDR
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Hi, I am resending this on the mailing list. This is an issue from in_pcb.c 
v 1.59.2.5 2000/08/16 06:14:23

I just encountered a problem in trying to bind a server address using the 
SO_REUSEPORT and SO_REUSEADDR option after the first one has been shutdown. 
Looking into in_pcbbind, I see that if SO_REUSEADDR or SO_REUSEPORT is set, 
then the variable "wild" is 0.

if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT)) == 0)
         wild = 1;

However, when calling in_pcblookup_local (in the non-multicast case), it 
seems to ignore the value of wild.

if (lport) {
         ...
         ...
         if (so->so_cred->cr_uid != 0
                         && !IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
                 t = in_pcblookup_local(inp->inp_pcbinfo, sin->sin_addr, 
lport,
                                         prison ? 0 : INPLOOKUP_WILDCARD);

Shouldn't the last argument to in_pcblookup_local be "wild" instead of 
INPLOOKUP_WILDCARD? By passing INPLOOKUP_WILDCARD, in_pcblookup_local 
always ignores the SO_REUSE* options and bind fails. Is this a bug or am I 
missing something? Any help would be appreciated.

-Anand




********************************
Anand Narayanan
Wind River Systems.
http://www.windriver.com
********************************


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