diff options
| -rw-r--r-- | ggsn/ggsn.c | 8 |
1 files changed, 5 insertions, 3 deletions
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 @@ int apn_start(struct apn_ctx *apn) 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 @@ int apn_start(struct apn_ctx *apn) } 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; } |