From 298c8103db80b292791616af4fd497342a71867f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Josef=20=C5=98=C3=ADdk=C3=BD?= <jridky@redhat.com>
Date: Wed, 24 May 2023 10:49:41 +0200
Subject: [PATCH] libsnmp, UDP transport: Fix sendmsg() error code handling
 
This change has been made because of Linux kernel commit "ipv4: Return
-ENETUNREACH if we can't create route but saddr is valid"
(https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=595e0651d029)
 
Fixes: https://github.com/net-snmp/net-snmp/issues/564
Fixes: https://github.com/net-snmp/net-snmp/pull/576
 
[ bvanassche: edited commit message ]
---
 snmplib/transports/snmpUDPBaseDomain.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
 
diff --git a/snmplib/transports/snmpUDPBaseDomain.c b/snmplib/transports/snmpUDPBaseDomain.c
index ca8f9a5554..cd6b15e2ad 100644
--- a/snmplib/transports/snmpUDPBaseDomain.c
+++ b/snmplib/transports/snmpUDPBaseDomain.c
@@ -315,7 +315,7 @@ int netsnmp_udpbase_sendto_unix(int fd, const struct in_addr *srcip,
                         sizeof(struct sockaddr));
         else
             rc = sendmsg(fd, &m, MSG_DONTWAIT);
-        if (rc >= 0 || errno != EINVAL)
+        if (rc >= 0 || (errno != EINVAL && errno != ENETUNREACH))
             return rc;
 
         /*