Where to put in a dhcpd.conf modification script?

[lidocaineus]

I’d like to add some custom dhcpd.conf options, but how do I get the dhcpd to reread the changes?

I can copy over a custom file to /var/register/system/dhcp/dhcpd.conf with a post-boot script but by then, the dhcp server has been started. If I disable/re-enable the dhcp server it overwrites the changes.

[ppalias]

Would it work if you copy the custom file in pre-boot instead of post-boot?

[lidocaineus]

Unfortunately no, because it does the same thing – any file is just overwritten by whatever is generated when you hit “enable” on the dhcp menu.

[ppalias]

Try to edit file

/root/kerbynet.cgi/scripts/dhcp_configfile

[lidocaineus]

Yes, that’s where I’ve been looking to put it, but the script file is slightly complicated to decipher… all just to add two lines to a subnet declaration ( next-server a.b.c.d;
filename “pxelinux.0”;
)

[lidocaineus]

Got it working. Added an additional variable in that file to read in an additional file that had the pxe boot specifications.

It seems that adding a blanket “additional DHCP subnet options” to the GUI wouldn’t be hard if another variable was added in a similar fashion that just read in a ‘misc’ file.

[ppalias]

Yes indeed, adding a field for custom DHCPD commands would be the best.

[luckas]

Yes, it would be a good idea add an optional dhcp options.
Until it will, I’ve added this code in /root/kerbynet.cgi/scripts/dhcpd_configfile in line 115:

echo "  next-server 192.168.2.4;"

echo "  filename "pxelinux.0";"

I don’t know if when I reboot it will reset but I’ll try.

[ppalias]

It will reset it, you have to make the changes permanent by running a pre-boot script. You can save the file you will use for the change somewhere in /Database .

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