Ug! In a moment of utter stupidity I sent a bitcoin address to a client for a litecoin payment. Sure enough the transaction is stranded forever on the network.
Granted it’s 2.3 LTC, but that’s 2.3 LTC that are gone forever and ever. I can’t believe I made this kind of an error, but now that LTC is using segwit style addresses I guess this sort of collision can happen.
Ah well. Live and learn.