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Date: Sun, 04 Aug 2002 00:48:53 +0900 (JST)
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To: md@Linux.IT
Cc: 82468@bugs.debian.org, control@bugs.debian.org,
   debian-ipv6@lists.debian.org
Subject: Re: fix
From: YOSHIFUJI Hideaki / =?iso-2022-jp?B?GyRCNUhGIzFRTEAbKEI=?=
 <yoshfuji@wide.ad.jp>
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In article <[🔎] 20020803125143.GA2612@wonderland.linux.it> (at Sat, 3 Aug 2002 14:51:43 +0200), "Marco d'Itri" <md@Linux.IT> says:

> tag 82468 patch
> thanks
> 
> This patch fixes the problems with IPv6 support in ssh and 2.2 kernels
> by disabling by default IPv6 support on these systems. It can be
> explicitly turned on with -6 on the command line like with the current
> package, but anybody serious about IPv6 will not even try a 2.2 kernel
> anyway.
> 
> If you think this solution is satisfactory please let me know when you
> plan to apply this patch.

The problem is just sockaddr_in6{} is smaller than what glibc-2.2 expects.
This patch hide the problem.   Please try this instead.

diff -ru openssh-3.4p1/canohost.c openssh-3.4p1-fix/canohost.c
--- openssh-3.4p1/canohost.c	Wed Jun 12 01:47:22 2002
+++ openssh-3.4p1-fix/canohost.c	Sun Aug  4 00:31:04 2002
@@ -64,6 +64,10 @@
 		}
 	}
 #endif
+#ifdef __linux__
+	if (from.ss_family == AF_INET6 && fromlen < sizeof(struct sockaddr_in6))
+		fromlen = sizeof(struct sockaddr_in6);
+#endif
 
 	if (getnameinfo((struct sockaddr *)&from, fromlen, ntop, sizeof(ntop),
 	    NULL, 0, NI_NUMERICHOST) != 0)
@@ -229,6 +233,12 @@
 			return NULL;
 		}
 	}
+
+#ifdef __linux__
+	if (addr.ss_family == AF_INET6 && addrlen < sizeof(struct sockaddr_in6))
+		addrlen = sizeof(struct sockaddr_in6);
+#endif
+
 	/* Get the address in ascii. */
 	if (getnameinfo((struct sockaddr *)&addr, addrlen, ntop, sizeof(ntop),
 	    NULL, 0, flags) != 0) {
@@ -315,6 +325,12 @@
 			fatal_cleanup();
 		}
 	}
+
+#ifdef __linux__
+	if (from.ss_family == AF_INET6 && fromlen < sizeof(struct sockaddr_in6))
+		fromlen = sizeof(struct sockaddr_in6);
+#endif
+
 	/* Return port number. */
 	if (getnameinfo((struct sockaddr *)&from, fromlen, NULL, 0,
 	    strport, sizeof(strport), NI_NUMERICSERV) != 0)

--yoshfuji