Not getting DHCP lease from Netgear LB1120 LTE Modem Bridged

michmoor

@mrn that’s a weird one. I would look into that system logs to see what’s going on (dhclient) with DHCP.

mrn

@michmoor I already did that in my first post, unless you mean some other place.

michmoor

@mrn yes i see that i apologize.
This doesnt seem like a pfsense related issue.
DHCP is 4 message types
Discover
Offer
Request
Acknowledgement

pfSense is sending out a broadcast looking for a dhcp server. The dhcp server (cable modem) will hear that broadcast and respond with an offer (public IP from the pool).
From your system log messages (assuming no filtering of the log messages), pfsense is looking for the dhcp server and its not responding.
As mentioned it could be a sticky mac address issue where the first record mac learned on the cable modem port is what will get the IP address and subsequent macs get nothing. If so and if rebooting the modem doesnt clear the mac then i would contact the service provider.

edit: Why are you hard coding a mac address in the pfsense WAN DHCP settings?

mrn

@michmoor

The reason I hardcoded it is that I have an high availability setup. Right now the LTE modem is connected to my secondary pfsense, but I want to me able to move the connection to the primary if necessary. I know that having the same MAC address can make it a seamless transition.

mrn

It won't pull an neither on bridged NOR on router mode.

mrn

@mrn And yes, I have updated it to the latest firmware version.

michmoor

@mrn in Router mode i suspect the cable modem is giving out a DHCP address in the RFC1918 space which based on your screenshot, pfsense will ignore. Uncheck that option and test again.