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Secondary NIC DNS Option

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I have a pfSense with a VPN connection, unraid has 5 NICs 4 in 802.3ad for the LAN and the other NIC is used for VPN.

My network is segmented as follows:



VPN LAN: < all the above are setup to access VPNLAN but it cannot access them back.


My problem is under network for any other than the main NIC or Bonding I can't set the DNS & I need to have some dockers and VMs on the VPNLan, to solve this I have to use an external DNS i.e which is not a favorable option as I'd rather have everything passes through the firewall.


VMs work fine without an issue but dockers are my main problem here, I manually tried adding a dns server under /boot/config/network.cfg but some dockers will not function properly.

This could be a future request but as the NIC can already get an IP though DHCP, why not the DNS as well.

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