Unexpected IP value leased from router DHCP

[djarvo]

Hello! I have a pretty simple home network configuration, where my isp router acts as DHCP leasing IPs in range 192.168.100.2 - 192.168.100.254.


On the screenshot you cah see DHCP config with a single allocated IP for my wifi AP.

So I also have a Proxmox Host on 192.168.100.3, but this is a static binding on my router:


What I try to do is to create a CT in Proxmox with enabled DHCP. I expect that the CT will get an IP within DHCP range 192.168.100.2 - 192.168.100.254 (like 192.168.100.4). But the result is different. This is what "ip a " says in CT:

root@CT101:~# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0@if32: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether bc:24:11:2e:ef:16 brd ff:ff:ff:ff:ff:ff link-netnsid 0
    inet 10.30.83.214/19 metric 1024 brd 10.30.95.255 scope global dynamic eth0
       valid_lft 3570sec preferred_lft 3570sec
    inet6 fe80::be24:11ff:fe2e:ef16/64 scope link 
       valid_lft forever preferred_lft forever

I see that IP 10.30.83.214 was allocated, but I can't get where it was leased from.
This is "ip a" from proxmox host:

root@pve:~# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host noprefixroute
       valid_lft forever preferred_lft forever
2: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master vmbr0 state UP group default qlen 1000
    link/ether b4:2e:99:cc:3c:a3 brd ff:ff:ff:ff:ff:ff
    altname enp0s31f6
3: vmbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether b4:2e:99:cc:3c:a3 brd ff:ff:ff:ff:ff:ff
    inet 192.168.100.3/32 scope global vmbr0
       valid_lft forever preferred_lft forever
    inet6 fe80::b62e:99ff:fecc:3ca3/64 scope link
       valid_lft forever preferred_lft forever
28: veth100i0@if2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master fwbr100i0 state UP group default qlen 1000
    link/ether fe:0f:cd:1a:16:d1 brd ff:ff:ff:ff:ff:ff link-netnsid 0
29: fwbr100i0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether de:46:7d:42:2d:cb brd ff:ff:ff:ff:ff:ff
30: fwpr100p0@fwln100i0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master vmbr0 state UP group default qlen 1000
    link/ether 06:74:9b:ac:93:ed brd ff:ff:ff:ff:ff:ff
31: fwln100i0@fwpr100p0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master fwbr100i0 state UP group default qlen 1000
    link/ether de:46:7d:42:2d:cb brd ff:ff:ff:ff:ff:ff
32: veth101i0@if2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master fwbr101i0 state UP group default qlen 1000
    link/ether fe:5f:9d:f3:ba:73 brd ff:ff:ff:ff:ff:ff link-netnsid 1
33: fwbr101i0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 4e:dc:68:65:b3:aa brd ff:ff:ff:ff:ff:ff
34: fwpr101p0@fwln101i0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master vmbr0 state UP group default qlen 1000
    link/ether 7e:0e:a8:17:13:05 brd ff:ff:ff:ff:ff:ff
35: fwln101i0@fwpr101p0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master fwbr101i0 state UP group default qlen 1000
    link/ether 4e:dc:68:65:b3:aa brd ff:ff:ff:ff:ff:ff

Can someone give me a hint what is wrong with my config?

 

[djarvo]

After some diggin into my router configuration I found out that lan port where proxmox is plugged was configured in WAN DHCP mode (whatever it means). Changing it to LAN fixed the IP distribution.