[GH-ISSUE #2349] DNS Network Routes break masquerading #4994

New Issue

saavagebueno · 2026-08-05T01:00:48-04:00

saavagebueno commented

2026-08-05 01:00:48 -04:00

Originally created by @ndziuba on GitHub (Jul 30, 2024).
Original GitHub issue: https://github.com/netbirdio/netbird/issues/2349

When creating a DNS Network Route masquerading is set by default.
This results in the following rule for routing nodes when running: iptables -t nat -S
-A NETBIRD-RT-NAT -j MASQUERADE
-A NETBIRD-RT-NAT -j MASQUERADE

Because of that every traffic trough a routing node that has this route gets masqueraded as no -s or -d flags are set.
Even when masquerading is deactivated for another route.

Deactivating masq for the DNS route fixes this behaviour.
But that means they cant be used with masquerading on a node that has non-masqueraded routes.

NetBird version

0.28.6

Originally created by @ndziuba on GitHub (Jul 30, 2024). Original GitHub issue: https://github.com/netbirdio/netbird/issues/2349 When creating a DNS Network Route masquerading is set by default. This results in the following rule for routing nodes when running: iptables -t nat -S -A NETBIRD-RT-NAT -j MASQUERADE -A NETBIRD-RT-NAT -j MASQUERADE Because of that every traffic trough a routing node that has this route gets masqueraded as no -s or -d flags are set. Even when masquerading is deactivated for another route. Deactivating masq for the DNS route fixes this behaviour. But that means they cant be used with masquerading on a node that has non-masqueraded routes. **NetBird version** 0.28.6

saavagebueno added the waiting-feedback triage-needed labels 2026-08-05 01:00:48 -04:00

saavagebueno referenced this issue

2026-08-05 05:08:56 -04:00

[PR #4994] [MERGED] [management] use single user for authorized users list for browser client #21771

saavagebueno referenced this issue

2026-08-05 05:08:57 -04:00

[PR #4994] [management] use single user for authorized users list for browser client #21781

saavagebueno referenced this issue

2026-08-05 06:08:59 -04:00

[PR #4994] [MERGED] [management] use single user for authorized users list for browser client #24677

saavagebueno referenced this issue

2026-08-05 07:07:48 -04:00

[PR #4994] [MERGED] [management] use single user for authorized users list for browser client #26792

saavagebueno referenced this issue

2026-08-05 07:07:49 -04:00

[PR #4994] [management] use single user for authorized users list for browser client #26800

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Reference: DYNR/netbird#4994