[PLUG] Setting up ipv6 on ubuntu 20.04

[Walt Mankowski via plug <plug@lists.phillylinux.org>]

Over the weekend I updated the firmware on my old Buffalo DD-WRT
router, and discovered I now had ipv6 support! I enabled it and I've
spent the past few days experimenting with it.

Outgoing ipv6 seems to be working fine. However, I can only receive
incoming ipv6 connections from within my LAN (basically, my
laptop). DD-WRT has very few ipv6 settings so I thought it might be
getting blocked by the firewall on my linux box. I enabled ufw and
added a few rules for ssh and http. Unfortunately it's still not
working.

Has anyone ever tried this and gotten it working? As far as I can tell
the packets aren't hitting my linux box. Are they getting stopped by
DD-WRT? Or maybe Comcast doesn't allow incoming ipv6 connections?

Walt

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