Score:0

Could not determine IPv4/IPv6 protocol

gb flag

I am having this problem all of a sudden. Open VPN worked brilliantly until December 2021- then it stopped connecting with the following reason:

RESOLVE: Cannot resolve host address: xxxx.xxxx.com:xxxx (No such host is known. ) Could not determine IPv4/IPv6 protocol.

I have hidden the host address and port designations- but hopefully you get the idea. Any help would be greatly appreciated as this service is no longer reliable.

Score:0
pe flag

This message is printed when no IPv4/v6 preference is given in the config (i.e. proto udp/tcp is used) and OpenVPN is running as a server. Just change in server.conf on what you need udp4/upd6:

;proto udp
proto udp4

Updated: For tcp protocol (not udp) just change in server.conf on what you need tcp4/tcp6:


;proto tcp
proto tcp4

Original Source

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