Recently I have many problems with RED VPN (UTM to UTM).
On the Head Office I have 2 ISP, and I use only one to configure my VPNs.
I have 4 Branch Office, and sometimes a I get the following error in them.
2018:02:22-09:46:55 sophos1040 red_client[4159]: Tunnel 5: Forking client handler
2018:02:22-09:46:56 sophos1040 red_client[9018]: CHILD Tunnel 5: Can't connect (IO::Socket::INET6 configuration failed)
2018:02:22-09:47:00 sophos1040 red_client[4159]: Tunnel 5: Forking client handler
2018:02:22-09:47:01 sophos1040 red_client[9023]: CHILD Tunnel 5: Can't connect (IO::Socket::INET6 configuration failed)
2018:02:22-09:47:05 sophos1040 red_client[4159]: Tunnel 5: Forking client handler
Sometimes the VPN appear down but works normally.
When it doesn't work I have to disable and enable the Interface ISP on the Head Office.
I've tried redo Red tunnel in the Branch Office and in Head Office, but I can do the VPN works only when I reset my ISP Interface. Sometimes a have to reset 2 or 3 times.
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