[PATCH] conntrackd UDP IPv6 destination address not usable (Bug 1378) - Jan-Martin Raemer

From: Jan-Martin Raemer <raemer@zit-rlp.de>
To: netfilter-devel@vger.kernel.org
Subject: [PATCH] conntrackd UDP IPv6 destination address not usable (Bug 1378)
Date: Thu, 7 Nov 2019 09:17:10 +0100	[thread overview]
Message-ID: <20191107081710.GC5020@laptop-jmr.hs-koblenz.de> (raw)

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Hi,

as reported in https://bugzilla.netfilter.org/show_bug.cgi?id=1378,
conntrackd refuses to start with a vaild IPv6_Destination_Address,
reporting "inet_pton(): IPv6 unsupported" due to a forgotten handling of
err>0 (i.e. success). This patch fixes the issue:

Signed-off-by: Jan-Martin Raemer <raemer@zit-rlp.de>

diff --git a/src/read_config_yy.y b/src/read_config_yy.y
index a4aa7f5..31109c4 100644
--- a/src/read_config_yy.y
+++ b/src/read_config_yy.y
@@ -467,7 +467,7 @@ udp_option : T_IPV6_DEST_ADDR T_IP
                dlog(LOG_WARNING, "%s is not a valid IPv6 address", $2);
                free($2);
                break;
-       } else {
+       } else if (err < 0) {
                dlog(LOG_ERR, "inet_pton(): IPv6 unsupported!");
                exit(EXIT_FAILURE);
        }

Best regards,
Jan-Martin

-- 
Dr. Jan-Martin Rämer
Systemtechnik
Zentrum für Hochschul-IT Rheinland-Pfalz
Moselweißer Straße 4, 56073 Koblenz
Telefon +49(0)261 9528-906
raemer@zit-rlp.de

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