Add v6 auto-ENR to Lodestar

[yorickdowne]

What I did

In my testing, v6 auto-ENR now works with Lodestar. Remove the manual ENR setup - which btw was broken anyway because the wget returned too much data

[nflaig]

did you test this on an IPv6 only host? What I observed testing this is if it's dual stack then it will only discover the IPv4 address

[yorickdowne]

I need to test again. It was dual stack, but it was after a manual address had been set once. It’s possible it cached that.

[yorickdowne]

Indeed not ready. Placing into draft. I'll give you an issue for it: I think lodestar is close. The network is ready, as seen with Lighthouse and Grandine

[nflaig]

I think lodestar is close

so from last time I looked at this, the problem was that if the node is reachable via IPv4 then other nodes will just "pong" us on that interface and not on IPv6 which means we do not reach the minimum threshold requires to discover the external IP, right now it's 10

I am not that deep into the networking/discv5 stack, so definitely having an issue for it would help

I believe this problem would also resolve itself if there are more IPv6 only nodes on the network

[yorickdowne]

ChainSafe/lodestar#8808

[yorickdowne]

This works from Lodestar 1.41.0

[nflaig]

running the same exact changes locally already