diff options
| -rw-r--r-- | networking/udhcp/dhcpc.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/networking/udhcp/dhcpc.c b/networking/udhcp/dhcpc.c index ee19f5578..bdb1e2b9b 100644 --- a/networking/udhcp/dhcpc.c +++ b/networking/udhcp/dhcpc.c @@ -979,6 +979,10 @@ static int udhcp_raw_socket(int ifindex) log1("Opening raw socket on ifindex %d", ifindex); //log2? fd = xsocket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_IP)); + /* ^^^^^ + * SOCK_DGRAM: remove link-layer headers on input (SOCK_RAW keeps them) + * ETH_P_IP: want to receive only packets with IPv4 eth type + */ log1("Got raw socket fd"); //log2? sock.sll_family = AF_PACKET; @@ -1005,8 +1009,6 @@ static int udhcp_raw_socket(int ifindex) * * Copyright: 2006, 2007 Stefan Rompf <sux@loplof.de>. * License: GPL v2. - * - * TODO: make conditional? */ static const struct sock_filter filter_instr[] = { /* load 9th byte (protocol) */ |