udhcpc: allow -O OPT take numeric params

function                                             old     new   delta
udhcpc_main                                         2623    2654     +31

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

1 files changed, 5 insertions, 2 deletions

diff --git a/networking/udhcp/dhcpc.c b/networking/udhcp/dhcpc.c
index 510c3a1d0..5d3291b8c 100644
--- a/networking/udhcp/dhcpc.c
+++ b/networking/udhcp/dhcpc.c
@@ -1134,8 +1134,11 @@ int udhcpc_main(int argc UNUSED_PARAM, char **argv)
                 client_config.no_default_options = 1;
         while (list_O) {
                 char *optstr = llist_pop(&list_O);
-                unsigned n = udhcp_option_idx(optstr);
-                n = dhcp_optflags[n].code;
+                unsigned n = bb_strtou(optstr, NULL, 0);
+                if (errno || n > 254) {
+                        n = udhcp_option_idx(optstr);
+                        n = dhcp_optflags[n].code;
+                }
                 client_config.opt_mask[n >> 3] |= 1 << (n & 7);
         }
         while (list_x) {