[GH-ISSUE #3839] iOS client cannot connect to Network / Network routers #8124

New Issue

saavagebueno · 2026-08-05T01:16:05-04:00

saavagebueno commented

2026-08-05 01:16:05 -04:00

Originally created by @qiangxinglin on GitHub (May 18, 2025).
Original GitHub issue: https://github.com/netbirdio/netbird/issues/3839

Describe the problem

iOS client can successfully connect to the device through the netbird assigned IPs (starts with 100.127), but failed to connect through remote devices' private IP (or remote subnet).

To Reproduce

iOS on LAN1 join netbird, in "all" group, get netbird IP 100.127.0.1
Linux on LAN2 join netbird, with static LAN ip 10.10.0.1, advertise network 10.10.0.0/16 to "all" group, get netbird IP 100.127.0.2
Windows on LAN1 join netbird, in "all" group, get netbird IP 100.127.0.3

Actual behavior

iOS device failed connect to the service on Linux server through 10.10.0.1:PORT, but success on 100.127.0.2:PORT, also failed to other subnet device service (e.g. 10.10.0.2:PORT2)
Windows device can connect to the service on Linux server through both 10.10.0.1:PORT and 100.127.0.2:PORT, and success on other subnet devices.

Expected behavior

iOS device can connect to the service on Linux server through both 10.10.0.1:PORT and 100.127.0.2:PORT
Windows device can connect to the service on Linux server through both 10.10.0.1:PORT and 100.127.0.2:PORT, and success on other subnet devices.

Are you using NetBird Cloud?

Yes, using NetBird Cloud

NetBird version

iOS: 0.36.4-dev
Linux: 0.44.0
Windows: 0.44.0

Is any other VPN software installed?

Linux install tailscale but down (tailscale down)
iOS, Windows: No

Debug output

Sensitive, contact privately to supply.

We advise reviewing the anonymized output for any remaining personal information.

Screenshots

If applicable, add screenshots to help explain your problem.

Additional context

Add any other context about the problem here.

Have you tried these troubleshooting steps?

Checked for newer NetBird versions
Searched for similar issues on GitHub (including closed ones)
Restarted the NetBird client
Disabled other VPN software
Checked firewall settings

Originally created by @qiangxinglin on GitHub (May 18, 2025). Original GitHub issue: https://github.com/netbirdio/netbird/issues/3839 **Describe the problem** iOS client can successfully connect to the device through the netbird assigned IPs (starts with `100.127`), but failed to connect through remote devices' private IP (or remote subnet). **To Reproduce** 1. iOS on `LAN1` join netbird, in "all" group, get netbird IP `100.127.0.1` 2. Linux on `LAN2` join netbird, with static LAN ip `10.10.0.1`, advertise network `10.10.0.0/16` to "all" group, get netbird IP `100.127.0.2` 3. Windows on `LAN1` join netbird, in "all" group, get netbird IP 100.127.0.3 **Actual behavior** `iOS` device failed connect to the service on Linux server through `10.10.0.1:PORT`, but success on `100.127.0.2:PORT`, also failed to other subnet device service (e.g. `10.10.0.2:PORT2`) `Windows` device can connect to the service on Linux server through both `10.10.0.1:PORT` and `100.127.0.2:PORT`, and success on other subnet devices. **Expected behavior** `iOS` device can connect to the service on Linux server through both `10.10.0.1:PORT` and `100.127.0.2:PORT` `Windows` device can connect to the service on Linux server through both `10.10.0.1:PORT` and `100.127.0.2:PORT`, and success on other subnet devices. **Are you using NetBird Cloud?** Yes, using NetBird Cloud **NetBird version** iOS: 0.36.4-dev Linux: 0.44.0 Windows: 0.44.0 **Is any other VPN software installed?** Linux install tailscale but down (`tailscale down`) iOS, Windows: No **Debug output** Sensitive, contact privately to supply. We advise reviewing the anonymized output for any remaining personal information. **Screenshots** If applicable, add screenshots to help explain your problem. **Additional context** Add any other context about the problem here. **Have you tried these troubleshooting steps?** - [x] Checked for newer NetBird versions - [x] Searched for similar issues on GitHub (including closed ones) - [x] Restarted the NetBird client - [x] Disabled other VPN software - [x] Checked firewall settings

saavagebueno added the triage-needed label 2026-08-05 01:16:05 -04:00

saavagebueno commented

2026-08-05 01:16:05 -04:00

@SebbesApa commented on GitHub (Jul 28, 2025):

Any news on this?

@SebbesApa commented on GitHub (Jul 28, 2025): Any news on this?

Sign in to join this conversation.

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claude/agent-network-test-cases-p743vw

android/gui-integration

revert/component-types

feat-post_quantum_ml_kem

ice-stun-wg-demux

dependabot/npm_and_yarn/proxy/web/npm_and_yarn-b39864987c

agent-network-setup-poc

dependabot/go_modules/aws-sdk-8f849ebaed

dependabot/github_actions/actions-a940c7c866

dependabot/go_modules/otel-e34c790afd

dependabot/go_modules/testcontainers-de325c0dd6

dependabot/go_modules/wireguard-dbd6b95108

dependabot/go_modules/pion-5f703e1eca

dependabot/go_modules/gorm-2271c8195b

fix-login-needed-check

dependabot/go_modules/google.golang.org/grpc-1.82.1

fix/ui-gtk3-support

enterprise-traefik-and-migration-fixes

disambiguate_p2p_metrics

revert/component-types-hookup

embedded-vnc

feature/ios-ssh

docs/agent-network-docs-update

dependabot/go_modules/github.com/aws/aws-sdk-go-v2/service/s3-1.106.3

dependabot/go_modules/github.com/pion/stun/v3-3.1.5

fix-ssh-authorized-users-multi-rule

peer-acl-multi-source

reverse-proxy-crowdsec-appsec

reverse-proxy-allow-match-or

client-local-metrics

lazy-conn-per-peer

lazy-conn-rosenpass

dependabot/go_modules/github.com/gopacket/gopacket-1.7.0

dependabot/go_modules/goauthentik.io/api/v3-3.2026050.6

dependabot/go_modules/github.com/pires/go-proxyproto-0.15.0

dependabot/go_modules/github.com/jackc/pgx/v5-5.10.0

dependabot/go_modules/github.com/oapi-codegen/runtime-1.6.0

dependabot/go_modules/github.com/eko/gocache/lib/v4-4.2.4

dependabot/go_modules/github.com/pkg/sftp-1.13.11

dependabot/go_modules/github.com/coreos/go-oidc/v3-3.20.0

ssh-windows-privilege-check

fix/explicit-cors-handling

fix/remove-math-rand

test/gui-memory-leak-fix

fix/ui-status-dispatch

install-script-ui-dependencies

fix/grpc-get-network-map

fix/subscribe-status-coalesce

fix/tray-menu-item-leak

fix/windows-tray-race

feature/changeset

worktree-dns-route-qtype-fallthrough

mdm_integration

mlsmaycon-patch-2

feat/agent-network-ollama

proxy-tunnel-cache-ttl-env

coderabbitai/utg/1e5b0a5

grpc-acl

test/battery-drain

components-impl-drop-indexes-use-xids-no-resource-policy-map

fix/nmap-relevant-groups

e2e-guardrail-blocks-unselected-model

fix/lazyconn-cold-start-allowed-ips

vertex-guardrails-model-access-e2e

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refactor/relay-foreign-cache

ci/trigger-release-tests

feature/kimi-3-agent-networks-dns-warmup

feature/dns-lazy-conn-warmup

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dmitri-propagate-auth-grant-types-on-combined

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diagnose-empty-vs-corrupt-state

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rp_key_persistency

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0.74.6-branch-sync

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dependabot/go_modules/github.com/pkg/sftp-1.13.10

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Reference: DYNR/netbird#8124