ProxMox 5 interface not working on host?

Question

Proxmox

Hello! There are a couple of questions, until I can figure out vlan and interfaces on the host.
1. Interfaces

auto lo
iface lo inet loopback
auto enp30s0
iface enp30s0 inet manual
auto enp31s0
iface enp31s0 inet manual
auto vmbr0
iface vmbr0 inet static
address 10.10.1.251
netmask 255.255.255.0
bridge_ports enp30s0
bridge_stp off
bridge_fd 0
bridge_vlan_aware yes
#
1et.static
vmbr1
address .1.252
netmask 255.255.255.0
bridge_ports enp31s0
bridge_stp off
bridge_fd 0
bridge_vlan_aware yes
#LAN
auto vmbr2
iface vmbr2 inet static
address 10.10.20.20
netmask 255.255.255.0
bridge_ports none
bridge_stp off
bridge_fd 0
#PRIVAT

With these settings, if I disable the enp30s0 interface, then ProxMox stops responding to two addresses 10.10.1.251 and 10.10.1.252, according to the idea, only 10.10.1.251 should fall off and continue to work on 10.10.1.252.
When enabled

spoiler

enp30s0: flags=4163 mtu 1500
ether 00:1a:4b:d4:3f:e6 txqueuelen 1000 (Ethernet)
RX packets 487 bytes 47714 (46.5 KiB)
RX errors 0 dropped 1186 overruns 0 frame 0
TX packets 412 bytes 61575 (60.1 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 16
enp31s0: flags=4163 mtu 1500
ether 00:1a:4b:d4:3f:e7 txqueuelen 1000 (Ethernet)
RX packets 49848 bytes 5375332 (5.1 MiB)
RX errors 0 dropped 1188 overruns 0 frame 0
TX packets 876 bytes 122357 (119.4 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 17
lo: flags=73 mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10
loop txqueuelen 1000 (Local Loopback)
RX packets 2139 bytes 567421 (554.1 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2139 bytes 567421 (554.1 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
tap102i0: flags=4419 mtu 1500
ether 42:4d:6e:95:a6:c3 txqueuelen 1000 (Ethernet)
RX packets 289 bytes 27679 (27.0 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 28084 bytes 2086862 (1.9 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
tap102i1: flags=4419 mtu 1500
ether 32:0c:9c:85:b1:36 txqueuelen 1000 (Ethernet)
RX packets 69 bytes 9430 (9.2 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 17 bytes 1338 (1.3 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
tap103i0: flags=4419 mtu 1500
ether 7a:01:a9:de:df:b1 txqueuelen 1000 (Ethernet)
RX packets 15362 bytes 1491748 (1.4 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 33109 bytes 2406504 (2.2 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
tap103i1: flags=4419 mtu 1500
ether aa:2c:34:45:25:55 txqueuelen 1000 (Ethernet)
RX packets 542 bytes 86488 (84.4 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 27827 bytes 2026380 (1.9 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
tap103i2: flags=4419 mtu 1500
ether ce:d5:7c:2c:3d:4e txqueuelen 1000 (Ethernet)
RX packets 6 bytes 528 (528.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 77 bytes 9990 (9.7 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
vmbr0: flags=4163 mtu 1500
inet 10.10.1.251 netmask 255.255.255.0 broadcast 10.10.1.255
inet6 fe80::21a:4bff:fed4:3fe6 prefixlen 64 scopeid 0x20
ether 00:1a:4b:d4:3f:e6 txqueuelen 1000 (Ethernet)
RX packets 45213 bytes 4739385 (4.5 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 12566 bytes 12865612 (12.2 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
vmbr1: flags=4163 mtu 1500
inet 10.10.1.252 netmask 255.255.255.0 broadcast 10.10.1.255
inet6 fe80::21a:4bff:fed4:3fe7 prefixlen 64 scopeid 0x20
ether 00:1a:4b:d4:3f:e7 txqueuelen 1000 (Ethernet)
RX packets 28890 bytes 1768264 (1.6 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 117 bytes 9890 (9.6 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
vmbr2: flags=4163 mtu 1500
inet 10.10.20.20 netmask 255.255.255.0 broadcast 10.10.20.255
inet6 fe80::1031:bcff:fe7c:8d0f prefixlen 64 scopeid 0x20
ether 32:0c:9c:85:b1:36 txqueuelen 1000 (Ethernet)
RX packets 75 bytes 8908 (8.6 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 18 bytes 1396 (1.3 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

With
freetexthost.com/hu4nl4qjci off

Answer 1

bridge name bridge id STP enabled interfaces
vmbr0 8000.001a4bd43fe6 no enp30s0
tap103i0
vmbr1 8000.001a4bd43fe7 no enp31s0
tap102i0
tap102i2
tap103i1
vmbr2 8000.ced57c2c3d4e no tap102i1
tap103i2