Describe the Bug

I cannot ping DNS records and use in my custom DNS server

INFO: 2026/01/30 22:28:00 Starting HTTP server on socket /var/run/olm.sock
INFO: 2026/01/30 22:28:00 Created shared UDP socket on port 53086 (refcount: 2)
INFO: 2026/01/30 22:28:00 Starting hole punch for 1 exit nodes
INFO: 2026/01/30 22:28:00 Websocket Connected
INFO: 2026/01/30 22:28:01 The tunnel IP is: 100.90.128.16/24
INFO: 2026/01/30 22:28:01 Set IPv4 addresses: [100.90.128.16], subnet masks: [255.255.255.0]
INFO: 2026/01/30 22:28:01 Set MTU: 1280
INFO: 2026/01/30 22:28:01 Added IPv4 included route: {DestinationAddress:100.96.128.0 SubnetMask:255.255.255.0 GatewayAddress: IsDefault:false}
INFO: 2026/01/30 22:28:01 Adding route to 100.96.128.0/24 via interface pangolin
INFO: 2026/01/30 22:28:01 Added route for remote subnet: 100.96.128.0/24
INFO: 2026/01/30 22:28:01 Added IPv4 included route: {DestinationAddress:192.168.12.0 SubnetMask:255.255.255.0 GatewayAddress: IsDefault:false}
INFO: 2026/01/30 22:28:01 Adding route to 192.168.12.0/24 via interface pangolin
INFO: 2026/01/30 22:28:01 Added route for remote subnet: 192.168.12.0/24
INFO: 2026/01/30 22:28:01 Added IPv4 included route: {DestinationAddress:192.168.20.0 SubnetMask:255.255.255.0 GatewayAddress: IsDefault:false}
INFO: 2026/01/30 22:28:01 Adding route to 192.168.20.0/24 via interface pangolin
INFO: 2026/01/30 22:28:01 Added route for remote subnet: 192.168.20.0/24
INFO: 2026/01/30 22:28:01 Added IPv4 included route: {DestinationAddress:192.168.12.151 SubnetMask:255.255.255.255 GatewayAddress: IsDefault:false}
INFO: 2026/01/30 22:28:01 Adding route to 192.168.12.151/32 via interface pangolin
INFO: 2026/01/30 22:28:01 Added route for remote subnet: 192.168.12.151/32
INFO: 2026/01/30 22:28:01 Added IPv4 included route: {DestinationAddress:192.168.12.20 SubnetMask:255.255.255.255 GatewayAddress: IsDefault:false}
INFO: 2026/01/30 22:28:01 Adding route to 192.168.12.20/32 via interface pangolin
INFO: 2026/01/30 22:28:01 Added route for remote subnet: 192.168.12.20/32
INFO: 2026/01/30 22:28:01 Started monitoring for site 7 at 100.90.128.1:53818
INFO: 2026/01/30 22:28:01 Configured peer /5Bfp5fMbPQS2Ilc2bpCVAlXR8JYxvDaBjI1kLENxi4=
INFO: 2026/01/30 22:28:01 Started monitoring peer 7

INFO: 2026/01/30 22:28:01 Started holepunch connection monitor
INFO: 2026/01/30 22:28:01 DNS proxy started on 100.96.128.1:53 (tunnelDNS=false)
INFO: 2026/01/30 22:28:01 Starting rapid holepunch test for site 7 at [IP_REDACTED]:53817 (max 5 attempts, 400ms timeout each)
INFO: 2026/01/30 22:28:01 Detected DNS manager: systemd-resolved
INFO: 2026/01/30 22:28:01 Using systemd-resolved DNS configurator
INFO: 2026/01/30 22:28:01 Current DNS servers: []
INFO: 2026/01/30 22:28:01 Setting DNS servers to: [100.96.128.1]
INFO: 2026/01/30 22:28:01 Original DNS servers backed up: []
INFO: 2026/01/30 22:28:01 Set DNS servers: [100.96.128.1]
INFO: 2026/01/30 22:28:01 WireGuard device created.
ERROR: 2026/01/30 22:28:03 Failed to get DNS response for <REDACTED_FQDN_1>.
ERROR: 2026/01/30 22:28:03 Failed to get DNS response for <REDACTED_FQDN_1>.
WARN: 2026/01/30 22:28:03 WireGuard connection to site 7 is DISCONNECTED
WARN: 2026/01/30 22:28:03 Rapid test: site 7 holepunch FAILED after 5 attempts, will relay
INFO: 2026/01/30 22:28:03 Rapid test failed for site 7, requesting relay
INFO: 2026/01/30 22:28:03 Sent relay message
ERROR: 2026/01/30 22:28:04 Failed to get DNS response for <REDACTED_FQDN_2>.
ERROR: 2026/01/30 22:28:04 Failed to get DNS response for <REDACTED_FQDN_3>.
ERROR: 2026/01/30 22:28:04 Failed to get DNS response for <REDACTED_FQDN_3>.
ERROR: 2026/01/30 22:28:04 Failed to get DNS response for <REDACTED_FQDN_4>.
ERROR: 2026/01/30 22:28:04 Failed to get DNS response for <REDACTED_FQDN_4>.
ERROR: 2026/01/30 22:28:04 Failed to get DNS response for <REDACTED_FQDN_2>.
ERROR: 2026/01/30 22:28:05 Failed to get DNS response for <REDACTED_ADMIN_PANEL_FQDN>.
ERROR: 2026/01/30 22:28:05 Failed to get DNS response for <REDACTED_ADMIN_PANEL_FQDN>.
INFO: 2026/01/30 22:28:08 Holepunch to site 7 failed 6 times, triggering relay
INFO: 2026/01/30 22:28:08 Sent relay message
ERROR: 2026/01/30 22:28:08 Failed to get DNS response for <REDACTED_FQDN_1>.
ERROR: 2026/01/30 22:28:08 Failed to get DNS response for <REDACTED_FQDN_1>.
ERROR: 2026/01/30 22:28:08 Failed to get DNS response for <REDACTED_LABS_FQDN>.
ERROR: 2026/01/30 22:28:08 Failed to get DNS response for <REDACTED_LABS_FQDN>.
ERROR: 2026/01/30 22:28:09 Failed to get DNS response for <REDACTED_FQDN_3>.
ERROR: 2026/01/30 22:28:09 Failed to get DNS response for <REDACTED_FQDN_3>.
ERROR: 2026/01/30 22:28:09 Failed to get DNS response for <REDACTED_FQDN_4>.
ERROR: 2026/01/30 22:28:09 Failed to get DNS response for <REDACTED_FQDN_2>.
ERROR: 2026/01/30 22:28:09 Failed to get DNS response for <REDACTED_FQDN_2>.
ERROR: 2026/01/30 22:28:09 Failed to get DNS response for <REDACTED_FQDN_4>.
ERROR: 2026/01/30 22:28:10 Failed to get DNS response for <REDACTED_ADMIN_PANEL_FQDN>.
ERROR: 2026/01/30 22:28:10 Failed to get DNS response for <REDACTED_ADMIN_PANEL_FQDN>.
ERROR: 2026/01/30 22:28:13 Failed to get DNS response for <REDACTED_PTR_DOMAIN>.
ERROR: 2026/01/30 22:28:13 Failed to get DNS response for <REDACTED_LABS_FQDN>.
ERROR: 2026/01/30 22:28:13 Failed to get DNS response for <REDACTED_FQDN_1>.
ERROR: 2026/01/30 22:28:13 Failed to get DNS response for <REDACTED_LABS_FQDN>.
ERROR: 2026/01/30 22:28:13 Failed to get DNS response for <REDACTED_FQDN_1>.
ERROR: 2026/01/30 22:28:13 Failed to resolve primary relay endpoint: DNS lookup failed: lookup <REDACTED_ADMIN_PANEL_FQDN> on 127.0.0.53:53: read udp 127.0.0.1:42388->127.0.0.53:53: i/o timeout
ERROR: 2026/01/30 22:28:14 Failed to get DNS response for <REDACTED_FQDN_3>.
ERROR: 2026/01/30 22:28:14 Failed to get DNS response for <REDACTED_FQDN_2>.
INFO: 2026/01/30 22:28:14 Holepunch to site 7 failed 7 times, triggering relay
INFO: 2026/01/30 22:28:14 Sent relay message
INFO: 2026/01/30 22:28:22 Received exit request via API
INFO: 2026/01/30 22:28:22 Processing shutdown request via API
INFO: 2026/01/30 22:28:22 Restoring original DNS configuration
INFO: 2026/01/30 22:28:22 DNS configuration restored successfully
INFO: 2026/01/30 22:28:22 Hole punch manager stopped
INFO: 2026/01/30 22:28:22 Stopped holepunch connection monitor
INFO: 2026/01/30 22:28:22 UDP hole punch goroutine ended for all exit nodes
ERROR: 2026/01/30 22:28:22 Failed to resolve primary relay endpoint: DNS lookup failed: lookup <REDACTED_ADMIN_PANEL_FQDN> on 127.0.0.53:53: server misbehaving
INFO: 2026/01/30 22:28:23 DNS proxy stopped
INFO: 2026/01/30 22:28:23 Released shared UDP bind
INFO: 2026/01/30 22:28:23 Olm service stopped

i don't know it this referenced in #5 or not.

i tried use documentation, but no avail.

Environment

• OS Type & Version: Linux Mint 22.3
• Pangolin Version: Latest
• Gerbil Version: Latest
• Traefik Version: Latest
• Newt Version: Latest
• Client Version: (if applicable) Latest

To Reproduce

1. Install Pangolin CLI
2. Log in as self hosted
3. Use command (Example: "pangolin up --upstream-dns [self-hosted dns server ip]"
4. Try ping some website (example: "example.com")

Expected Behavior

Should be given from the IP domain. (or some response)