From: George Thessalonikefs <george@nlnetlabs.nl>
Date: Wed, 1 Dec 2021 03:26:36 +0000 (+0100)
Subject: - Fix #454: listen_dnsport.c:825: error: ‘IPV6_TCLASS’ undeclared.
X-Git-Tag: release-1.14.0rc1~3
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=3dbda3aac38418e3d41c0722fffcfaa6285801fe;p=thirdparty%2Funbound.git

- Fix #454: listen_dnsport.c:825: error: ‘IPV6_TCLASS’ undeclared.
---

diff --git a/doc/Changelog b/doc/Changelog
index ae7e5ad39..009541447 100644
--- a/doc/Changelog
+++ b/doc/Changelog
@@ -6,6 +6,7 @@
 	- Merge PR #562 from Willem: Reset keepalive per new tcp session.
 	- Merge PR #522 from sibeream: memory management violations fixed.
 	- Merge PR #530 from Shchelk: Fix: dereferencing a null pointer.
+	- Fix #454: listen_dnsport.c:825: error: ‘IPV6_TCLASS’ undeclared.
 
 30 November 2021: Wouter
 	- Fix to remove git tracking and ci information from release tarballs.
diff --git a/services/listen_dnsport.c b/services/listen_dnsport.c
index bedb0d5be..6a33fbcda 100644
--- a/services/listen_dnsport.c
+++ b/services/listen_dnsport.c
@@ -869,9 +869,14 @@ set_ip_dscp(int socket, int addrfamily, int dscp)
 	ds = dscp << 2;
 	switch(addrfamily) {
 	case AF_INET6:
-		if(setsockopt(socket, IPPROTO_IPV6, IPV6_TCLASS, (void*)&ds, sizeof(ds)) < 0)
+	#ifdef IPV6_TCLASS
+		if(setsockopt(socket, IPPROTO_IPV6, IPV6_TCLASS, (void*)&ds,
+			sizeof(ds)) < 0)
 			return sock_strerror(errno);
 		break;
+	#else
+		return "IPV6_TCLASS not defined on this system";
+	#endif
 	default:
 		if(setsockopt(socket, IPPROTO_IP, IP_TOS, (void*)&ds, sizeof(ds)) < 0)
 			return sock_strerror(errno);