diff options
Diffstat (limited to 'sbin/ipfw/nat64stl.c')
| -rw-r--r-- | sbin/ipfw/nat64stl.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sbin/ipfw/nat64stl.c b/sbin/ipfw/nat64stl.c index 44e0cbafbf3e..e82ec202b5c6 100644 --- a/sbin/ipfw/nat64stl.c +++ b/sbin/ipfw/nat64stl.c @@ -249,6 +249,9 @@ nat64stl_create(const char *name, uint8_t set, int ac, char *av[]) NEED1("IPv6 prefix6 required"); if ((p = strchr(*av, '/')) != NULL) *p++ = '\0'; + else + errx(EX_USAGE, + "Prefix length required: %s", *av); if (inet_pton(AF_INET6, *av, &cfg->prefix6) != 1) errx(EX_USAGE, "Bad prefix: %s", *av); |