Can't reach PBS via browser since changing interfaces

[dekiesel]

I run PBS on the same host as PVE and since I changed my network to have the PVE Gui on one VLAN while having my LXCs and VMs on another VLAN I can't reach PBS' gui anymore.

Current interfaces:

root@pve:/etc/proxmox-backup# cat /etc/network/interfaces
[...]
auto lo
iface lo inet loopback


iface eno1 inet manual


auto vmbr0.100
iface vmbr0.100 inet static
        address  10.1.100.12/24
        gateway  10.1.100.1


auto vmbr0
iface vmbr0 inet manual
    bridge-ports eno1
    bridge-stp off
    bridge-fd 0
    bridge-vlan-aware yes
    bridge-vids 2-4094

PBS is running as far as I can tell

root@pve:/etc/proxmox-backup# systemctl status proxmox-backup-proxy
● proxmox-backup-proxy.service - Proxmox Backup API Proxy Server
     Loaded: loaded (/lib/systemd/system/proxmox-backup-proxy.service; enabled; preset: enabled)
     Active: active (running) since Sun 2023-10-29 01:02:41 CEST; 6s ago
   Main PID: 72800 (proxmox-backup-)
      Tasks: 16 (limit: 38163)
     Memory: 31.3M
        CPU: 150ms
     CGroup: /system.slice/proxmox-backup-proxy.service
             └─72800 /usr/lib/x86_64-linux-gnu/proxmox-backup/proxmox-backup-proxy


Oct 29 01:02:46 pve proxmox-backup-proxy[72800]: POST /dynamic_chunk
Oct 29 01:02:46 pve proxmox-backup-proxy[72800]: POST /dynamic_chunk
Oct 29 01:02:46 pve proxmox-backup-proxy[72800]: upload_chunk done: 1681424 bytes, 13cdcbdae17d9e80678eb2e496d69d22aa21742adfc79c729f6d43af16faf71b
Oct 29 01:02:46 pve proxmox-backup-proxy[72800]: POST /dynamic_chunk
Oct 29 01:02:47 pve proxmox-backup-proxy[72800]: POST /dynamic_chunk
Oct 29 01:02:47 pve proxmox-backup-proxy[72800]: upload_chunk done: 3636803 bytes, 795fba1ad90687164328acf7d8bb8d737ec56aa61e928b2b77a744ffe6d51c99
Oct 29 01:02:47 pve proxmox-backup-proxy[72800]: POST /dynamic_chunk
Oct 29 01:02:47 pve proxmox-backup-proxy[72800]: upload_chunk done: 1085690 bytes, 6df125fbafab3538a685950b43a01cad633878670df981cafee53daa22cb015f
Oct 29 01:02:47 pve proxmox-backup-proxy[72800]: upload_chunk done: 1239408 bytes, a1379e30ced97ec126b3b3a4224d6e5286ef92cb379d6708ba823f021f6b79e4
Oct 29 01:02:47 pve proxmox-backup-proxy[72800]: upload_chunk done: 2713583 bytes, 479be32540e8ec89a7c5883701f3d1caa11ac85723797f5258da5bf794b2f78c
root@pve:/etc/proxmox-backup# systemctl status proxmox-backup
● proxmox-backup.service - Proxmox Backup API Server
     Loaded: loaded (/lib/systemd/system/proxmox-backup.service; enabled; preset: enabled)
     Active: active (running) since Sun 2023-10-29 00:36:58 CEST; 25min ago
   Main PID: 42420 (proxmox-backup-)
      Tasks: 6 (limit: 38163)
     Memory: 4.8M
        CPU: 1min 12.273s
     CGroup: /system.slice/proxmox-backup.service
             └─42420 /usr/lib/x86_64-linux-gnu/proxmox-backup/proxmox-backup-api


Oct 29 00:36:58 pve systemd[1]: Starting proxmox-backup.service - Proxmox Backup API Server...
Oct 29 00:36:58 pve proxmox-backup-[42420]: pve proxmox-backup-api[42420]: service is ready
Oct 29 00:36:58 pve systemd[1]: Started proxmox-backup.service - Proxmox Backup API Server.
root@pve:/etc/proxmox-backup#

I can reach PVE via https://10.1.100.12:8006 but nothing happens when going to https://10.1.100.12:8007.

root@pve:/etc/proxmox-backup# netstat -tulpn
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name   
tcp        0      0 0.0.0.0:111             0.0.0.0:*               LISTEN      1/init             
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      1121/sshd: /usr/sbi
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN      1333/master         
tcp        0      0 127.0.0.1:85            0.0.0.0:*               LISTEN      1417/pvedaemon     
tcp        0      0 127.0.0.1:82            0.0.0.0:*               LISTEN      42420/proxmox-backu
tcp6       0      0 :::111                  :::*                    LISTEN      1/init             
tcp6       0      0 :::22                   :::*                    LISTEN      1121/sshd: /usr/sbi
tcp6       0      0 :::3128                 :::*                    LISTEN      1432/spiceproxy     
tcp6       0      0 :::8006                 :::*                    LISTEN      1427/pveproxy       
tcp6       0      0 :::8007                 :::*                    LISTEN      72800/proxmox-backu
udp        0      0 0.0.0.0:111             0.0.0.0:*                           1/init             
udp        0      0 127.0.0.1:323           0.0.0.0:*                           1160/chronyd       
udp6       0      0 :::111                  :::*                                1/init             
udp6       0      0 ::1:323                 :::*                                1160/chronyd       
root@pve:/etc/proxmox-backup#

Do I need to tell PBS to use vmbr0.100? If yes, how?

Thanks!