Date: Tue, 14 Jan 2003 04:27:47 -0700 (MST) From: "Forrest W. Christian" <forrestc@imach.com> To: FreeBSD-gnats-submit@FreeBSD.org Subject: bin/47044: Sendmail "Can't assign requested addresses" Message-ID: <200301141127.h0EBRi092030@workhorse.imach.com>
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>Number: 47044
>Category: bin
>Synopsis: Sendmail "Can't assign requested addresses"
>Confidential: no
>Severity: critical
>Priority: high
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Tue Jan 14 03:30:04 PST 2003
>Closed-Date:
>Last-Modified:
>Originator: Forrest W. Chritian
>Release: FreeBSD 4.7-STABLE i386
>Organization:
Montana Internet Corporation
>Environment:
System: FreeBSD relay.mt.net 4.7-STABLE FreeBSD 4.7-STABLE #7: Tue Jan 14 18:45:13 GMT 2003 root@relay.mt.net:/usr/src/sys/compile/MAIL i386
This is on a multiprocessor box. IPv6 has tried both compiled into the kernel, and not. IPv6 has been both enabled and disabled in rc.conf.
>Description:
For some reason, the following code snippet from the daemon.c source file in /usr/src/contrib/sendmail/src results in a corrupted address in the clt_addr.sin.sin_addr.s_addr field on my system, along with clt_bind being set to true, which indicates the code *thinks* it got a valid address.
---------------
clt_bind = false;
/* Set up the address for outgoing connection. */
if (bitnset(D_BINDIF, d_flags) &&
(p = macvalue(macid("{if_addr}"), e)) != NULL &&
*p != '\0')
{
#if NETINET6
char p6[INET6_ADDRSTRLEN];
#endif /* NETINET6 */
memset(&clt_addr, '\0', sizeof clt_addr);
/* infer the address family from the address itself */
clt_addr.sa.sa_family = addr_family(p);
switch (clt_addr.sa.sa_family)
{
#if NETINET
case AF_INET:
clt_addr.sin.sin_addr.s_addr = inet_addr(p);
if (clt_addr.sin.sin_addr.s_addr != INADDR_NONE &&
clt_addr.sin.sin_addr.s_addr != INADDR_LOOPBACK)
{
clt_bind = true;
socksize = sizeof (struct sockaddr_in);
}
break;
#endif /* NETINET */
#if NETINET6
case AF_INET6:
if (inet_addr(p) != INADDR_NONE)
(void) sm_snprintf(p6, sizeof p6,
"IPv6:::ffff:%s", p);
else
(void) sm_strlcpy(p6, p, sizeof p6);
if (anynet_pton(AF_INET6, p6,
&clt_addr.sin6.sin6_addr) == 1 &&
!IN6_IS_ADDR_LOOPBACK(&clt_addr.sin6.sin6_addr))
{
clt_bind = true;
socksize = sizeof (struct sockaddr_in6);
}
break;
#endif /* NETINET6 */
#if 0
default:
syserr("554 5.3.5 Address= option unsupported for family %d",
clt_addr.sa.sa_family);
break;
#endif /* 0 */
}
if (clt_bind)
family = clt_addr.sa.sa_family;
}
-------------------
As stands, this results in sendmail failing when doing a queue run, getting errors like:
------------
relay# sendmail -v -qRmtha.org
Running /var/spool/mqueue/h0E9KMnX000089 (sequence 1 of 108)
<xxxxx@mtha.org>... Connecting to mail.mtha.org. via esmtp...
makeconnection: cannot bind socket [209.181.34.149]: Can't assign
requested address
<xxxx@mtha.org>... Connecting to mail.mt.net. via esmtp...
makeconnection: cannot bind socket [209.181.34.149]: Can't assign
requested address
<xxxx@mtha.org>... Deferred: Can't assign requested address
Running /var/spool/mqueue/h0E9KMnV000089 (sequence 2 of 108)
<xxxx@mtha.org>... Deferred: Can't assign requested address
-------------
209.181.34.149 varies from run to run (although seems to be consistent for several runs in a row, then it changes). 209.181.34.149 is *not* any address here and is *not* associated with the domains in question.
On occasion the code works as designed. I have also tried changing -DINET6 to -DINET in the sendmail makefile to verify that it isn't IPV6 code specific. No changes.
I have worked around the issue by adding a clt_bind=0; statement at the end of the code snipplet above, which forces the next section of code to disregard the corrupted address and refill the fields.
>How-To-Repeat:
Easily repeatable on my installation. First time I've seen it. System was originally
running earlier (>6months old) copy of FreeBSD-Stable, and had same issues. May just
be a subtle configuration error. Willing to work with appropriate FreeBSD/Sendmail
team members to help reproduce or fix the problem. I am unsure if this is a FreeBSD library bug or a sendmail bug, thus the freebsd-pr (as I'm more active in the FreeBSD community than the sendmail one).
>Fix:
Unknown.
>Release-Note:
>Audit-Trail:
>Unformatted:
Sendmail "Can't assign requested addresses"
From: Forrest W. Christian <forrestc@imach.com>
Reply-To: Forrest W. Christian <forrestc@imach.com>
Cc:
X-send-pr-version: 3.113
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