X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fsocket.c;h=aacf9bed9f1f50f106db3cd78b322461fc689ef8;hb=a7d3cc26f9694053712458615006ea79cd7a7cb4;hp=34068b91921f0dd889ffcbffe60ca225454dd420;hpb=18ffdfda48c327f56cac0aabdc6bada91cc9b7df;p=elogind.git

diff --git a/src/socket.c b/src/socket.c
index 34068b919..aacf9bed9 100644
--- a/src/socket.c
+++ b/src/socket.c
@@ -385,7 +385,7 @@ static void socket_dump(Unit *u, FILE *f, const char *prefix) {
                 prefix, s->directory_mode,
                 prefix, yes_no(s->keep_alive),
                 prefix, yes_no(s->free_bind),
-                prefix, s->tcp_congestion);
+                prefix, strna(s->tcp_congestion));
 
         if (s->control_pid > 0)
                 fprintf(f,
@@ -634,7 +634,13 @@ static void socket_apply_socket_options(Socket *s, int fd) {
                 int r, x;
 
                 r = setsockopt(fd, IPPROTO_IP, IP_TTL, &s->ip_ttl, sizeof(s->ip_ttl));
-                x = setsockopt(fd, IPPROTO_IPV6, IPV6_UNICAST_HOPS, &s->ip_ttl, sizeof(s->ip_ttl));
+
+                if (socket_ipv6_is_supported())
+                        x = setsockopt(fd, IPPROTO_IPV6, IPV6_UNICAST_HOPS, &s->ip_ttl, sizeof(s->ip_ttl));
+                else {
+                        x = -1;
+                        errno = EAFNOSUPPORT;
+                }
 
                 if (r < 0 && x < 0)
                         log_warning("IP_TTL/IPV6_UNICAST_HOPS failed: %m");