dnsmasq : set next-server

[TomT]

Hi

Router AC68U

I'm trying to set the DHCP option next-server value which should update the DHCP siaddr.

In /etc/dnsmasq.conf I've added:
dhcp-option:lan,66,x.x.x.x where x.x.x.x is the IP Address I want to use.

This didn't make any difference to the DHCP options given out.
I've also tried : dhcp-option:lan,66,"x.x.x.x"

Again that hasn't been given out.

if I set
dhcp-option-force:66,"x.x.x.x" Then scope option 66 is set, BUT the DHCP siaddr value isn't updated.

Anyone any idea how I get the siaddr value to be updated with the next-server value ?

Thanks

 

[RMerlin]

Don't edit /etc/dnsmasq.conf, that file gets dynamically generated by the router.

https://github.com/RMerl/asuswrt-merlin/wiki/Custom-config-files

 

[TomT]

Thanks for the reply.
I was editing that file, killing and restarting dnsmasq to test.
Once I'd got it working I was going to set a custom config file.

Still no nearer to setting the siaddr address..
Any one any ideas ?

I've tried this on openSuSE using it's dhcpd and that works using the next-server option.

Thanks

 

[TomT]

looks like I may have found it...

adding the following to dnsmasq.conf seems to work

dhcp-boot=file.txt,192.168.1.20,192.168.1.20

How do I get this to be included at boot ? Which file do I need to update ?

Thanks

 

[ColinTaylor]

How do I get this to be included at boot ? Which file do I need to update ?

https://github.com/RMerl/asuswrt-merlin/wiki/Custom-config-files

/jffs/configs/dnsmasq.conf.add

 

[TomT]

Thanks Colin.
I'll set this up at the weekend!