udhcpc: remove code which requires server ID to be on local network

This reverts "udhcpc: paranoia when using kernel UDP mode
for sending renew: server ID may be bogus".

Users complain that they do have servers behind routers
(with DHCP relays).

function                                             old     new   delta
send_packet                                          168     166      -2
bcast_or_ucast                                        25      23      -2
udhcp_send_kernel_packet                             301     295      -6
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-10)             Total: -10 bytes

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

1 files changed, 1 insertions, 3 deletions

diff --git a/networking/udhcp/d6_dhcpc.c b/networking/udhcp/d6_dhcpc.c
index 4dbc2b1bd..ed2255ef3 100644
--- a/networking/udhcp/d6_dhcpc.c
+++ b/networking/udhcp/d6_dhcpc.c
@@ -803,15 +803,13 @@ static NOINLINE int send_d6_renew(uint32_t xid, struct in6_addr *server_ipv6, st
         opt_ptr = add_d6_client_options(opt_ptr);
 
         bb_error_msg("sending %s", "renew");
-        if (server_ipv6) {
+        if (server_ipv6)
                 return d6_send_kernel_packet(
                         &packet, (opt_ptr - (uint8_t*) &packet),
                         our_cur_ipv6, CLIENT_PORT6,
                         server_ipv6, SERVER_PORT6,
                         client_config.ifindex
-                        /* TODO? send_flags: MSG_DONTROUTE (see IPv4 code for reason why) */
                 );
-        }
         return d6_mcast_from_client_config_ifindex(&packet, opt_ptr);
 }