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Hello

In the Gateways log there are constant entries with "sendto error: 22" and the status of the Gateway is accordingly "Offline, Packetloss".
Unfortunately, we haven't found the reason for it yet.
Since a recent configuration change that I have reverted shortly afterward, there are now also kernal errors in the general log: "arpresolve: can't allocate llinfo for 192.168.1.1 on igb1"
Is there anything missing or wrong in the configuration as mentioned below, or is the reason of the errors more probably on the other side, i.e. at the target gateway?

Current configuration:
LAN IP: 192.168.0.1
WAN static IP and WANGW: 62.2.x.x
Virtual IP: 192.168.1.100
Gateway: 192.168.1.1
NAT Reflection mode for port forwards: Pure NAT
Static Route: From Network 192.168.1.0/24 to Gateway 192.168.1.1 (Interface LAN)
Firewall Rule: From 192.168.0.0/24 to 192.168.1.0/24 (all ports) through the Default Gateway - I tried with the Gateway 192.168.1.1 (the errors remained)
Automatic Outbound NAT Rules: Interface WAN Source 192.168.1.0/24 & 192.168.0.0/24 and others, one entry with static port 500 for ISAKMP, one entry for all ports

Further settings (irrelevant concerning the error):
DNS Server: 8.8.8.8
Alliases IP: 192.168.78.0/24 (used for a VPN-connection)
VLAN IP: 10.20.0.1 (used for the WLAN)