[PATCH] ibacm/libacm.c: Use IPv4 rather than IPv6 for ACM server communication

[Hal Rosenstock <hal-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>]

When both IPv4 and IPv6 are running, getaddrinfo indicates IPv6
rather than IPv4 and that currently causes a failure to connect to
the ACM server. Fix is to set the address family in the hint to
getaddrinfo to IPv4.

Signed-off-by: Hal Rosenstock <hal-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
---
diff --git a/src/libacm.c b/src/libacm.c
index 727741f..5ca1abc 100644
--- a/src/libacm.c
+++ b/src/libacm.c
@@ -75,6 +75,7 @@ int ib_acm_connect(char *dest)
 
 	acm_set_server_port();
 	memset(&hint, 0, sizeof hint);
+	hint.ai_family = AF_INET;
 	hint.ai_protocol = IPPROTO_TCP;
 	ret = getaddrinfo(dest, NULL, &hint, &res);
 	if (ret)
--
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