HN wouldn’t let me use this in the link field: https://pon.wiki/guides/masquerade-as-the-att-inc-bgw620-700...

After putting my iPhone in lockdown mode > disconnecting my ATT fiber PON (leaving the router on) > going to WiFi settings in iOS > disabling Connectivity Assist and crucially > “Reset Data Usage”, iOS informed me that my certificate expired in May of 2025. The “common name” was set to ‘dsldevice.domain_not_set.invalid’, which lead me to the above link.