Hi. Sorry for late response. Thanks for providing solution, @PhilipDAth IKEv2 is the problem in this issue. But there are a few additional fixes in Sonicwall side. Go to SonicWall internal settings by putting diag at the end of the link. For example "sonicwallip:port/sonicwallui/7/m/diag" Find this option, Fix/ignore malformed TCP headers If it is off, turn it on. Meraki Documentation: https://documentation.meraki.com/MX/Site-to-site_VPN/IKEv1_and_IKEv2_for_non-Meraki_VPN_Peers_Compared
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