| From cf8b74784ec28e76ddae8c3ce55d9ff4876c0210 Mon Sep 17 00:00:00 2001 |
| From: Denton Gentry <dgentry@google.com> |
| Date: Sat, 29 Jun 2013 23:08:35 -0700 |
| Subject: [PATCH] Print MAC address of DHCPOFFER. |
| |
| Makes it easier to diagnose multiple-DHCP-server |
| issues. |
| --- |
| client/dhclient.c | 11 ++++++++++- |
| 1 file changed, 10 insertions(+), 1 deletion(-) |
| |
| diff --git a/client/dhclient.c b/client/dhclient.c |
| index 7a6bc09..697cbd6 100644 |
| --- a/client/dhclient.c |
| +++ b/client/dhclient.c |
| @@ -1505,7 +1505,16 @@ void dhcpoffer (packet) |
| return; |
| } |
| |
| - sprintf (obuf, "%s from %s", name, piaddr (packet -> client_addr)); |
| + if (packet -> haddr && packet -> haddr -> hbuf[0] == ARPHRD_ETHER) { |
| + snprintf (obuf, sizeof(obuf), |
| + "%s from %s (%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx)", |
| + name, piaddr (packet -> client_addr), |
| + packet -> haddr -> hbuf[1], packet -> haddr -> hbuf[2], |
| + packet -> haddr -> hbuf[3], packet -> haddr -> hbuf[4], |
| + packet -> haddr -> hbuf[5], packet -> haddr -> hbuf[6]); |
| + } else { |
| + snprintf (obuf, sizeof(obuf), "%s from %s", name, piaddr (packet -> client_addr)); |
| + } |
| |
| |
| /* If this lease doesn't supply the minimum required DHCPv4 parameters, |
| -- |
| 1.8.3 |
| |
