From: Pieter Lexis <pieter.lexis@powerdns.com>
Date: Wed, 29 Apr 2015 11:13:43 +0000 (+0200)
Subject: Fix compilation issues on ancient linux versions
X-Git-Tag: dnsdist-1.0.0-alpha1~248^2~86^2~2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=757d31799e660b83e7533276e3ff9a95ff3e3f06;p=thirdparty%2Fpdns.git

Fix compilation issues on ancient linux versions
---

diff --git a/pdns/pdns_recursor.cc b/pdns/pdns_recursor.cc
index 32f0a2e5f0..7ae2b40801 100644
--- a/pdns/pdns_recursor.cc
+++ b/pdns/pdns_recursor.cc
@@ -1187,7 +1187,9 @@ void makeUDPServerSockets()
 
     if(IsAnyAddress(sin)) {
       setsockopt(fd, IPPROTO_IP, GEN_IP_PKTINFO, &one, sizeof(one));     // linux supports this, so why not - might fail on other systems
+#ifdef IPV6_RECVPKTINFO
       setsockopt(fd, IPPROTO_IPV6, IPV6_RECVPKTINFO, &one, sizeof(one)); 
+#endif
       if(sin.sin6.sin6_family == AF_INET6 && setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &one, sizeof(one)) < 0) {
 	L<<Logger::Error<<"Failed to set IPv6 socket to IPv6 only, continuing anyhow: "<<strerror(errno)<<endl;
       }