Brian Candler wrote: > Hi, > > I'm using dnsmasq as supplied with OpenWrt WhiteRussian RC6: > > root@OpenWrt:~# dnsmasq -v > Dnsmasq version 2.33 Copyright (C) 2000-2006 Simon Kelley > Compile time options IPv6 GNU-getopt ISC-leasefile no-DBus no-I18N > > I'm trying to get it to generate an RFC 3361 "SIP server" option, code 120, > but I can't make it work. A tcpdump -X on the client shows that this option > isn't being included. > > I've added the following to the end of /etc/dnsmasq.conf : > > # SIP server (RFC 3361) > dhcp-option=120,1,192.168.1.1 > > and I don't get the option. But strangely, changing this to > > dhcp-option=42,192.168.1.1 > > *does* add an NTP server option into the response. > > I also tried adding -O 120,1,192.168.1.1 to the command line, to no effect. > > The test client is a Linux laptop running dhclient from CentOS 4.4. > > Any suggestions as to what I'm doing wrong? >
Grr, another overly-complex and unique DHCP option format. The best you can do for now is specify exactly what you want, byte-by-byte, in hex. Assuming your "dhcp-option=120,1,192.168.1.1" is what you want, rather than just an example, this would be dhcp-option=120,01:01:01:a8:c0 I'll add explict support for this option format to the next release. Cheers, Simon.
