TCP hole punching for Bitcoin nodes behind home NATs?

The email discusses practical experiences with node reachability, focusing on the utilization of various hole-punching technologies, including Iroh. The sender has experimented with a script provided by the recipient and shares specific outcomes when executed on their home internet connection. The results indicate that for IPv4, the status shows EIM (Explicit IP Multicast), while for IPv6, it is noted that there is no Network Address Translation (NAT) involved. This information suggests differences in network behavior or configuration between IPv4 and IPv6 environments in this context.