E0509

[somebodyLi]

what's wrong with my geth ????? whenever i start it ,i always got the message like this --"E0509 13:11:31.215032 p2p/nat/nat.go:114] Network port udp:30303 could not be mapped: no UPnP or NAT-PMP router discovered" ?? tell me why ???

[r8d8]

Do your 30303 port is opened?

[whilei]

I have seen "errors" like this logged before, though they've never actually correlated with or predicted a failing network connection... maybe an issue with either logging timing/verbosity, or minor error expecting or handling?

And @liyanhrxy does geth seem to be working alright for you despite this error message?

[somebodyLi]

yes, i sure the port 30303 is oppened !! And it seem to be working ,but the errors made me feeling bad?? i don't konw where is going wrong ?? the geth(ETH) client works well in the same environment .of course ,i
never starting them together!!!

[whilei]

I would categorize this as a logging misinformation issue, thanks for reporting it @liyanhrxy .

[somebodyLi]

Can I use the ETH client instead of ETC client to sync the ETC blockchain ???

[somebodyLi]

I find that in the ETC's main page ,the link of parity client is unavailable. Is that mean the new parity client would not support the ETC blockchain anymore ???

[whilei]

You can use Parity for ETC:

• https://wiki.parity.io/Chain-specification#chain-presets-available
• https://github.com/paritytech/parity/blob/master/ethcore/res/ethereum/classic.json

You can also use a fork of ETH client like ethoxy/multi-geth to support and run the ETC chain.

[somebodyLi]

Thank you so much !!!!!!!!