understanding and fixing MTU/MSS/PMTU with IPsec

RouterOS General
16

See: http://forum.mikrotik.com/t/nordvpn-ipsec-mikrotik-routing/140159/1

Your line should work but maybe 1382 is still to big for your connection. Try again with 1200 and the work your eay up.

Or try the better sollution. for IKEv2.