ggsn.c: Improve logging info on link-local ipv6 addr not found
Change-Id: I18fb952514712ff30d18c7626f84309055d3efa1
diff --git a/ggsn/ggsn.c b/ggsn/ggsn.c
index fa3e20c..ef2357b 100644
--- a/ggsn/ggsn.c
+++ b/ggsn/ggsn.c
@@ -194,6 +194,7 @@
struct in46_prefix ipv6_tun_linklocal_ip;
struct in46_prefix *blacklist;
int blacklist_size;
+ int rc;
if (apn->started)
return 0;
@@ -247,9 +248,10 @@
}
if (apn->cfg.apn_type_mask & (APN_TYPE_IPv6|APN_TYPE_IPv4v6)) {
- if (tun_ip_local_get(apn->tun.tun, &ipv6_tun_linklocal_ip, 1, IP_TYPE_IPv6_LINK) < 1) {
- LOGPAPN(LOGL_ERROR, apn, "Cannot obtain IPv6 link-local address of "
- "interface: %s\n", strerror(errno));
+ rc = tun_ip_local_get(apn->tun.tun, &ipv6_tun_linklocal_ip, 1, IP_TYPE_IPv6_LINK);
+ if (rc < 1) {
+ LOGPAPN(LOGL_ERROR, apn, "Cannot obtain IPv6 link-local address of interface: %s\n",
+ rc ? strerror(errno) : "tun interface has no link-local IP assigned");
apn_stop(apn, false);
return -1;
}