Let's use this thread to document & discuss the network connectivity problems being observed on mainnet right now:
Problem #1 - Bootstrapping:
mainnet.z.cash resolves to 1 IPv4 address no matter where you resolve it, and it's refusing all new TCP connections (AFAICT). As a result new nodes cannot join the network.
2016-10-28 19:59:31 socket recv error Connection reset by peer (104) in debug.log
or use tcpdump, wireshark, etc to examine at the network traffic
- The zcash ops team should repair that node, and (ideally) provide a few dozen more IPv4 addresses of geographically-distributed nodes for people to use. Given the popularity of this coin (and the 13117 h4x0r bullshit that attracts), it was not wise launch w/ just one addnode :-\
- Users with a working, well-connected node could post some nodes from their getpeerinfo rpc here, to allow new users to try joining the network through them. Note though that any/all of these may be bogus/malicious.
- The zcash devs could restore the IRC boostrapping code from satoshi's initial bitcoin releae (j/k, sorta)
The client attempts to connect to IPv6 addresses on nodes without IPv6 connectivity.
'connect() to [2a01:4f8:201:7489::2]:8233 failed: Network is unreachable (101)' in debug.log
This is a SW bug in the client that should ideally be fixed there, but you can work around it by adding 'onlynet=ipv4' to zcash.conf