diff options
Diffstat (limited to 'usr.sbin/dhcpd/dhcpd.8')
| -rw-r--r-- | usr.sbin/dhcpd/dhcpd.8 | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/usr.sbin/dhcpd/dhcpd.8 b/usr.sbin/dhcpd/dhcpd.8 index 1dba28aff50..b51e08d38c2 100644 --- a/usr.sbin/dhcpd/dhcpd.8 +++ b/usr.sbin/dhcpd/dhcpd.8 @@ -1,4 +1,4 @@ -.\" $OpenBSD: dhcpd.8,v 1.22 2014/01/03 16:21:58 jmc Exp $ +.\" $OpenBSD: dhcpd.8,v 1.23 2014/07/11 09:42:27 yasuoka Exp $ .\" .\" Copyright (c) 1995, 1996 The Internet Software Consortium. .\" All rights reserved. @@ -36,7 +36,7 @@ .\" see ``http://www.isc.org/''. To learn more about Vixie .\" Enterprises, see ``http://www.vix.com''. .\" -.Dd $Mdocdate: January 3 2014 $ +.Dd $Mdocdate: July 11 2014 $ .Dt DHCPD 8 .Os .Sh NAME @@ -46,6 +46,7 @@ .Nm dhcpd .Bk -words .Op Fl dfn +.Op Fl u Ns Op Ar bind_address .Op Fl A Ar abandoned_ip_table .Op Fl C Ar changed_ip_table .Op Fl c Ar config-file @@ -149,7 +150,9 @@ This should be done on systems where .Nm is unable to identify non-broadcast interfaces, but should not be required on other systems. -If no interface names are specified on the command line, +If any interface name and +.Fl u +is not specified on the command line, .Nm will identify all network interfaces which are up, eliminating non-broadcast interfaces if possible, and listen for DHCP broadcasts on each interface. @@ -239,6 +242,24 @@ for testing lease files in a non-production environment. .It Fl n Only test configuration, do not run .Nm . +.It Fl u Ns Op Ar bind_address +Use an UDP socket instead of BPF for receiving and sending packets. +Only DHCPINFORM messages can be handled on this socket, other messages are +discarded. +With this option, +.Nm +can answer DHCPINFORM from the clients on on non ethernet interfaces +(eg. +.Xr tun 4 +or +.Xr pppx 4 +.Ns ) . +If +.Ar bind_address +is specified, +.Nm +will bind that address, otherwise +the limited broadcast address (255.255.255.255) is used as default. .It Fl Y Ar synctarget Add target .Ar synctarget |