system: Handle empty DNS server gateway #6462
Merged
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This PR fixes adds handling for empty DNS server gateway to fix
/system_general.php: ROUTING: not a valid host gateway address: ''
.In System -> Settings -> General a user can optionally set a gateway for each DNS server. However, if no gateway is set for a DNS server the error above is thrown. This is caused by
system_host_route
being always called, even though there is no gateway set. If none is set, there's no need to setup a static route.