0xWheatyz/nixos-configurations
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fix(wireguard): use public DNS to resolve endpoint before tunnel is up

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Query @1.1.1.1 explicitly in postUp/preDown hooks since the VPN DNS
(10.0.1.65) is unreachable before the tunnel establishes.
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0xWheatyz
2026-04-15 19:08:13 -04:00
parent b4e4036c41
commit cca5c48725
1 changed files with 2 additions and 2 deletions
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configuration.nix
+2 -2
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@@ -181,13 +181,13 @@
privateKeyFile = "/etc/wireguard/private.key";
postUp = ''
ENDPOINT_IP=$(${pkgs.dig}/bin/dig +short vpn.leeworks.dev | head -1)
ENDPOINT_IP=$(${pkgs.dig}/bin/dig +short vpn.leeworks.dev @1.1.1.1 | head -1)
GATEWAY=$(${pkgs.iproute2}/bin/ip route show default | ${pkgs.gawk}/bin/awk '{print $3}')
DEV=$(${pkgs.iproute2}/bin/ip route show default | ${pkgs.gawk}/bin/awk '{print $5}')
${pkgs.iproute2}/bin/ip route add "$ENDPOINT_IP" via "$GATEWAY" dev "$DEV"
'';
preDown = ''
ENDPOINT_IP=$(${pkgs.dig}/bin/dig +short vpn.leeworks.dev | head -1)
ENDPOINT_IP=$(${pkgs.dig}/bin/dig +short vpn.leeworks.dev @1.1.1.1 | head -1)
${pkgs.iproute2}/bin/ip route del "$ENDPOINT_IP" || true
'';