pfSense lost all routes after disk full

[ljashdu29921]

Hey, due to an issue with log-rotation, the rootfs of my pfSense ran full without me noticing.
After an unsuspecting config change (edited a Firewall alias), all networking suddenly failed. I established a Serial Console connection to the machine, I noticed that my routing table is completely empty:

# netstat -rWn
Routing tables

Internet:
Destination        Gateway            Flags       Use    Mtu      Netif Expire
127.0.0.1          link#15            UH            0  16384        lo0

Internet6:
Destination                       Gateway                       Flags       Use    Mtu    Netif Expire
::1                               link#15                       UH            0  16384      lo0
fe80::%lo0/64                     link#15                       U             0  16384      lo0
fe80::1%lo0                       link#15                       UHS           0  16384      lo0

I've cleared space on the disk and rebooted several times. I also tried touching /var/dhcpd/var/db/dhcpd6.leases after reading this: https://redmine.pfsense.org/issues/5957

It didn't help. Interface configuration is still there and looks good. Is there any way to recover from this?