diff options
| -rw-r--r-- | conf.c | 10 |
1 files changed, 8 insertions, 2 deletions
@@ -157,7 +157,10 @@ static void conf_ports(const struct ctx *c, char optname, const char *optarg, fwd->mode = FWD_ALL; - for (i = 0; i < NUM_PORTS; i++) { + /* Skip port 0. It has special meaning for many socket APIs, so + * trying to bind it is not really safe. + */ + for (i = 1; i < NUM_PORTS; i++) { if (fwd_port_is_ephemeral(i)) continue; @@ -262,7 +265,10 @@ static void conf_ports(const struct ctx *c, char optname, const char *optarg, } while ((p = next_chunk(p, ','))); if (exclude_only) { - for (i = 0; i < NUM_PORTS; i++) { + /* Skip port 0. It has special meaning for many socket APIs, so + * trying to bind it is not really safe. + */ + for (i = 1; i < NUM_PORTS; i++) { if (fwd_port_is_ephemeral(i) || bitmap_isset(exclude, i)) continue; |