iproute: support advmss option

function                                             old     new   delta
iproute_modify                                      1164    1221     +57
str_is_lock                                            -      22     +22
packed_usage                                       31372   31382     +10
do_iproute                                           157     132     -25
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 2/1 up/down: 89/-25)             Total: 64 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/networking/ip.c b/networking/ip.c
index 155adcfe4..0d66d5319 100644
--- a/networking/ip.c
+++ b/networking/ip.c
@@ -171,7 +171,7 @@
 //usage:       "        NODE_SPEC := PREFIX"IF_FEATURE_IP_RULE(" [table TABLE_ID]")" [proto RTPROTO] [scope SCOPE] [metric METRIC]\n"
 //usage:       "        INFO_SPEC := NH OPTIONS\n"
 //usage:       "        NH := [via [inet|inet6] ADDRESS] [dev IFACE] [src ADDRESS] [onlink]\n"
-//usage:       "        OPTIONS := [mtu NUM]"
+//usage:       "        OPTIONS := [mtu [lock] NUM] [advmss [lock] NUM]"
 //upstream man ip-route:
 //======================
 //ip route { show | flush } SELECTOR