WAN interface DHCP failure loop

tedquade

23.01-RC (amd64)
built on Sun Jan 08 15:18:55 UTC 2023
FreeBSD 14.0-CURRENT

Problem first noted when ISP recently changed my static public IP address via their sticky DHCP service. The firewall dashboard cycled the proper WAN IP address on and off and alternately the proper gateway address cycled on and off. The way out of this cycling was to reboot the firewall.

I have further tested the WAN DHCP action and if I make a minor change to the WAN interface config save and restart the WAN configuration, the interface acts as above with the same workaround. Related log entry follows.

Jan 29 10:25:43 dhclient 46461 exiting.
Jan 29 10:25:43 dhclient 46461 connection closed
Jan 29 10:25:43 dhclient 31139 accepting packet with data after udp payload.
Jan 29 10:25:43 dhclient 31139 ip length 343 disagrees with bytes received 377.
Jan 29 10:25:43 dhclient 31139 bound to 65.87.224.58 -- renewal in 86400 seconds.
Jan 29 10:25:43 dhclient 51247 Creating resolv.conf
Jan 29 10:25:43 dhclient 50889 /sbin/route add default 65.87.224.2
Jan 29 10:25:43 dhclient 50217 /sbin/route add -host 65.87.224.2 -iface igb0
Jan 29 10:25:43 dhclient 49137 Adding new routes to interface: igb0
Jan 29 10:25:43 dhclient 48463 New Routers (igb0): 65.87.224.2
Jan 29 10:25:43 dhclient 48221 New Broadcast Address (igb0): 65.87.224.255
Jan 29 10:25:43 dhclient 47909 New Subnet Mask (igb0): 255.255.255.0
Jan 29 10:25:43 dhclient 47582 New IP Address (igb0): 65.87.224.58
Jan 29 10:25:43 dhclient 47542 ifconfig igb0 inet 65.87.224.58 netmask 255.255.255.0 broadcast 65.87.224.255
Jan 29 10:25:43 dhclient 47448 Starting add_new_address()
Jan 29 10:25:43 dhclient 46822 REBOOT
Jan 29 10:25:43 dhclient 31139 DHCPACK from 74.206.148.178
Jan 29 10:25:43 dhclient 31139 accepting packet with data after udp payload.
Jan 29 10:25:43 dhclient 31139 ip length 343 disagrees with bytes received 377.
Jan 29 10:25:43 dhclient 31139 DHCPREQUEST on igb0 to 255.255.255.255 port 67
Jan 29 10:25:43 dhclient 45936 PREINIT
Jan 29 10:25:37 dhclient 89248 exiting.
Jan 29 10:25:37 dhclient 89248 connection closed

Ted Quade

tedquade

Seems simply unplugging and reconnecting the WAN ethernet cable triggers the issue.

Don't know when this issue arose.

Ted Quade

tedquade

@tedquade Same issue is present in 22.05.

I'll keep rolling back as far as I can.

Ted Quade

tedquade

@tedquade 22.05 is as far back as I can go.

Ted Quade

tedquade

@tedquade I reverted the 23.01 RC install to factory defaults and WAN DHCP functions correctly. That indicates I have a local config issue but have no idea as to where to start troubleshooting for a remedy.

Ted Quade