I had a different issue, also related to this update. My destination NAT broke. I eventually got it to a point where I could either have destination NAT working and some external websites fail to load with ERR_SSL_UNRECOGNIZED_NAME_ALERT, or be stuck with no destination NAT so I could have internet access for all websites. It was weird though because it only affected certain websites. I have been unsuccessful with finding a working configuration and am using my backup router on an older version.
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