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NetworkManager Dispatcher: Configure systemd-resolved DNS server with custom port on connection up event
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| # NetworkManager connection config does not like custom ports for DNS servers | |
| # we work around this by using a dispatcher to configure this on up events | |
| # change these to your desired configs | |
| CONNECTION_ID=wg0 | |
| DNS_TARGET=10.10.0.1:5300 | |
| DNS_SEARCH_DOMAIN=~testing | |
| cat > /etc/NetworkManager/dispatcher.d/99-${CONNECTION_ID}.sh <<EOF | |
| #!/usr/bin/env bash | |
| [[ \${CONNECTION_ID} != "${CONNECTION_ID}" ]] || return 0 | |
| if [[ ${NM_DISPATCHER_ACTION} == "up" ]] | |
| then | |
| systemd-resolve --interface "${CONNECTION_ID}' --set-dns $DNS_TARGET --set-domain "$DNS_SEARCH_DOMAIN" | |
| fi | |
| EOF |
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You can specify a custom port like this:
sudo nmcli connection modify wg0 ipv4.dns dns+udp://10.10.0.1:5300 ipv4.dns-search ~testing