extensions: libip6t_REJECT: Avoid to print the default reject with value in the trans...

Avoid to print the reject with value in the translation when the value
is the default.

Before this patch:

$ sudo ip6tables-translate -A FORWARD -p TCP --dport 22 -j REJECT
nft add rule ip6 filter FORWARD tcp dport 22 counter reject with icmpv6 type port-unreachable

After this patch:

$ sudo ip6tables-translate -A FORWARD -p TCP --dport 22 -j REJECT
nft add rule ip6 filter FORWARD tcp dport 22 counter reject

Signed-off-by: Laura Garcia Liebana <nevola@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

diff --git a/extensions/libip6t_REJECT.c b/extensions/libip6t_REJECT.c
index c30f292908fac9178226363a7c6a27c1b11ddd51..5fa551ecf4bf70f9262b876b70fe594eee0e937f 100644 (file)
--- a/extensions/libip6t_REJECT.c
+++ b/extensions/libip6t_REJECT.c
@@ -149,7 +149,10 @@ static int REJECT_xlate(const void *ip, const struct xt_entry_target *target,
        for (i = 0; i < ARRAY_SIZE(reject_table_xlate); ++i)
                if (reject_table_xlate[i].with == reject->with)
                        break;
-       if (reject->with == IP6T_TCP_RESET)
+
+       if (reject->with == IP6T_ICMP6_PORT_UNREACH)
+               xt_xlate_add(xl, "reject");
+       else if (reject->with == IP6T_TCP_RESET)
                xt_xlate_add(xl, "reject with %s", reject_table_xlate[i].name);
        else
                xt_xlate_add(xl, "reject with icmpv6 type %s",