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-rw-r--r--lib/util/util_net.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/lib/util/util_net.c b/lib/util/util_net.c
index 98eef3bd8b..57a0b1e40c 100644
--- a/lib/util/util_net.c
+++ b/lib/util/util_net.c
@@ -54,6 +54,15 @@ bool interpret_string_addr_internal(struct addrinfo **ppres,
/* By default make sure it supports TCP. */
hints.ai_socktype = SOCK_STREAM;
+
+ /* always try as a numeric host first. This prevents unnecessary name
+ * lookups, and also ensures we accept IPv6 addresses */
+ hints.ai_flags = AI_PASSIVE | AI_NUMERICHOST;
+ ret = getaddrinfo(str, NULL, &hints, ppres);
+ if (ret == 0) {
+ return true;
+ }
+
hints.ai_flags = flags;
/* Linux man page on getaddrinfo() says port will be