virNetSocketCheckProtocols: lookup IPv6 only if suspecting IPv6

There is not much sense trying to disprove host is IPv6 capable
if we know after first round (getifaddrs()) that is is not.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>

diff --git a/src/rpc/virnetsocket.c b/src/rpc/virnetsocket.c
index 1a0cf602869a13dc85f462eb24c5e5491069dcc5..2edd2a21d63b5ac6b910a0403841f944c1b1e70a 100644 (file)
--- a/src/rpc/virnetsocket.c
+++ b/src/rpc/virnetsocket.c
@@ -206,7 +206,8 @@ int virNetSocketCheckProtocols(bool *hasIPv4,
     freeifaddrs(ifaddr);
 
 
-    if (virNetSocketCheckProtocolByLookup("::1", AF_INET6, hasIPv6) < 0)
+    if (hasIPv6 &&
+        virNetSocketCheckProtocolByLookup("::1", AF_INET6, hasIPv6) < 0)
         return -1;
 
     VIR_DEBUG("Protocols: v4 %d v6 %d", *hasIPv4, *hasIPv6);