I lost WAN after this upgrade. Steps to fix below:
1) Took a new config backup
2) Restored an old config backup from around 2 months ago. WAN still down.
3) Restored the new config backup
After this the WAN started working again.
1) Took a new config backup
2) Restored an old config backup from around 2 months ago. WAN still down.
3) Restored the new config backup
After this the WAN started working again.