libxtables: avoid confusing use of ai_protocol=IPPROTO_IPV6

[Split hunk from Wes's submission. Added commit message. -j.eng]

ai_protocol normally specifies the L4 protocol one wants to
specifically inquire about when a service (2nd parameter to
getaddrinfo) is specified. Such a service lookup would potentially
yield nothing, because there just is not any "mytunnel 2222/ipv6" in
/etc/services, since IPPROTO_IPV6 itself is not a protocol with a
concept of (port-based) services to begin with.

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>

1 files changed, 0 insertions, 2 deletions

diff --git a/xtables.c b/xtables.c
index f66fb275..83c5b41f 100644
--- a/xtables.c
+++ b/xtables.c
@@ -1424,8 +1424,6 @@ host_to_ip6addr(const char *name, unsigned int *naddr)
 	hints.ai_flags    = AI_CANONNAME;
 	hints.ai_family   = AF_INET6;
 	hints.ai_socktype = SOCK_RAW;
-	hints.ai_protocol = IPPROTO_IPV6;
-	hints.ai_next     = NULL;
 
 	*naddr = 0;
 	if ((err = getaddrinfo(name, NULL, &hints, &res)) != 0) {