From d98d3951f3bc15c6e5c7cfa236d30d238f82eb8f Mon Sep 17 00:00:00 2001
From: Pieter Lexis <pieter.lexis@powerdns.com>
Date: Wed, 29 Apr 2015 13:20:30 +0200
Subject: [PATCH] Fix compilation problems for dnsdiston old linux versions

---
 pdns/dnsdist.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pdns/dnsdist.cc b/pdns/dnsdist.cc
index 749eeee0b5..6526d1112b 100644
--- a/pdns/dnsdist.cc
+++ b/pdns/dnsdist.cc
@@ -993,7 +993,9 @@ try
     if(IsAnyAddress(local)) {
       int one=1;
       setsockopt(cs->udpFD, IPPROTO_IP, GEN_IP_PKTINFO, &one, sizeof(one));     // linux supports this, so why not - might fail on other systems
+#ifdef IPV6_RECVPKTINFO
       setsockopt(cs->udpFD, IPPROTO_IPV6, IPV6_RECVPKTINFO, &one, sizeof(one)); 
+#endif
     }
 
     SBind(cs->udpFD, cs->local);    
-- 
2.47.2