Hello, I have the same issue. Two devices, both 6.43.4. HEX S and RB3011. # nov/22/2018 13:04:06 by RouterOS 6.43.4 # software id = 52XB-TREB # # model = RouterBOARD 3011UiAS # serial number = xxxxxxxxx /ip ipsec peer profile set [ find default=yes ] dh-group=modp4096,modp2048 enc-algorithm=\ aes-25...