Ping seems to be working fine:
$ ping google.com -c 3
PING google.com (172.217.1.142) 56(84) bytes of data.
64 bytes from atl14s07-in-f142.1e100.net (172.217.1.142): icmp_seq=1 ttl=117 time=2.43 ms
64 bytes from atl14s07-in-f142.1e100.net (172.217.1.142): icmp_seq=2 ttl=117 time=2.85 ms
64 bytes from atl14s07-in-f142.1e100.net (172.217.1.142): icmp_seq=3 ttl=117 time=3.64 ms
--- google.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2004ms
rtt min/avg/max/mdev = 2.433/2.975/3.640/0.500 ms
So I did a little more testing this afternoon. I swapped the repo from bullseye to buster and with that I was able to install version 0.4.3 (build 20210909231001) That version connects just fine with no issues.
https://pastebin.com/raw/Ej8QZ3CRThinking maybe there is an issue with the initial handshake to get the sharing key, I put that key in my rbfeeder.ini file and it connected just fine.
Now with a working installation, if I swap the repo back to bullseye and install 1.0.7 and don't change anything else, I'm back to the timeout errors.