Regression #16331
closed25.07 RC - no default gateway being set if default route is set to a gateway group and the Tier 1 member interface is down
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Description
With 25.07 so close I wanted to get this issue opened ASAP. Sorry for being a bit light on details—I'm collecting info still.
On my home 6100 that I factory erased and formatted with a fresh 25.07RC via Netgate installer (25.07.r.20250715.1733) I am having a bad situation occur where the default route (0.0.0.0/0) gets removed if the link drops (no carrier) on my WAN. This includes during operation, or at boot-time. The default route is not replaced by anything, thus breaking just about everything.
I thought it might have been because I have a S2S Wireguard tunnel that uses Policy Based Routing and has a Peer with "Allowed IPs" set to 0.0.0.0/0 but I tried disabling that peer and the behavior continued. I have tried rebooting a few times to be sure this wasn't a one-off.
If I manually go to System > Routing and choose a specific V4 gateway (my Tier2) then things start to work again.
Similarly, if I ssh in and type
route add default <ip_of_my_tier2_gw>
That gets things working temporarily as well. My setup is FIOS via a 10Gtek SFP+ adapter on ix0 as Tier1 (DHCP+DHCP6), a Teltonika RUTX11 as my Tier2 WAN on ix2 (RJ45) and LAN on ix1 (another SFP+ to a Unifi 10G switch). Packages installed currently are:
- acme
- arping
- aws-wizard
- Backup
- Cron
- Filer
- iperf
- ipsec-profile-wizard
- mDNS-Bridge
- Netgate_Firmware_Upgrade
- Nexus
- pfBlockerNG
- Shellcmd
- softflowd
- sudo
- System_Patches
- Tailscale
- WireGuard
I have a couple of status_output.tgz
debug archives collected before and immediately after a reboot. Happy to send those off to whoever @netgate to help troubleshoot this, or any other sort of troubleshooting. I'm surprised nobody else has hit this during the beta testing.
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