udhcpd: untangle incredibly messy handling of DHCPREQUEST

Also fixes attacks possible via DHCPDECLINE / DHCPRELEASE

function                                             old     new   delta
udhcpd_main                                         1846    1949    +103
send_renew                                           105     142     +37
send_NAK                                              61       -     -61
send_ACK                                             180       -    -180
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 2/0 up/down: 140/-241)         Total: -101 bytes

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

1 files changed, 0 insertions, 1 deletions

diff --git a/networking/udhcp/dhcpc.h b/networking/udhcp/dhcpc.h
index dfab2368c..c9827b6e7 100644
--- a/networking/udhcp/dhcpc.h
+++ b/networking/udhcp/dhcpc.h
@@ -40,7 +40,6 @@ int send_select(uint32_t xid, uint32_t server, uint32_t requested) FAST_FUNC;
 int send_decline(uint32_t xid, uint32_t server, uint32_t requested) FAST_FUNC;
 #endif
 int send_renew(uint32_t xid, uint32_t server, uint32_t ciaddr) FAST_FUNC;
-int send_renew(uint32_t xid, uint32_t server, uint32_t ciaddr) FAST_FUNC;
 int send_release(uint32_t server, uint32_t ciaddr) FAST_FUNC;
 
 int udhcp_recv_raw_packet(struct dhcp_packet *dhcp_pkt, int fd) FAST_FUNC;