Netopia 2200 - Manual (Page 175)

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Policy-based Routing using Filtersets
configure one filter to match the first type of packet and apply Force Routing. A
subsequent filter is required to match and for ward all other packets.
Management IP traffic
If the Force Routing filter is applied to source IP addresses, it may inadver t-
ently block communication with the router itself. You can avoid this by preced-
ing the Force Routing filter with a filter that matches the destination IP
address of the Gateway itself.