S.V. Groeneveld wrote:
I know about this option in /etc/dnsmasq.conf:
dhcp-option=6,192.168.0.1
It specifies the DNS server that will be passed to DHCP clients.
But I'd like to specify a secondary DNS server there, and the IP
address is variable (and could be found in
/var/run/dhclient.eth0.leases on my system).
The question is this: is it possible to use variable addresses for
dhcp-options?
Not in general. It's possible to use 0.0.0.0 to mean "the address of the
host running dnsmasq" but that doesn't help you.
I suggest a bit of scripting in the dhclient script to extract the
relevant address and write it into a file as
dhcp-option=6,xx.xx.xx.xx
and then restart dnsmasq.
Use conf-file=<filename> in /etc/dnsmasq.conf to include the dynamically
generated fragment.
Cheers,
Simon.
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