After I upgrade to latest 6.5 kernels both lxc and vms can not get ipv4

[steve3d]

I have a pve box installed with debian lxc and a windows vm on it, Before the 6.5.11-7 kernel, both of the lxc container and windows vm works with ipv4.

but now they can not get ipv4 from my router. here are the some of the journalctl output:

Sep 22 12:32:18 CT100 dhclient[89]: DHCPREQUEST for 192.168.1.249 on eth0 to 192.168.1.1 port 67
Sep 22 12:32:18 CT100 dhclient[89]: DHCPACK of 192.168.1.249 from 192.168.1.1
Sep 22 12:32:18 CT100 dhclient[89]: bound to 192.168.1.249 -- renewal in 37232 seconds.
Sep 22 22:52:50 CT100 dhclient[89]: DHCPREQUEST for 192.168.1.249 on eth0 to 192.168.1.1 port 67
Sep 22 22:52:50 CT100 dhclient[89]: DHCPACK of 192.168.1.249 from 192.168.1.1
Sep 22 22:52:50 CT100 dhclient[89]: bound to 192.168.1.249 -- renewal in 29289 seconds.

the dhcp actually works, but now only these

Dec 23 06:15:17 CT100 dhclient[86]: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8
Dec 23 06:15:25 CT100 dhclient[86]: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 10
Dec 23 06:15:35 CT100 dhclient[86]: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 18
Dec 23 06:15:53 CT100 dhclient[86]: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 15
Dec 23 06:16:08 CT100 dhclient[86]: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 10
Dec 23 06:16:18 CT100 dhclient[86]: No DHCPOFFERS received.
Dec 23 06:16:18 CT100 dhclient[86]: No working leases in persistent database - sleeping.

my router didn't change at all, debian container, and windows vm both won't get ipv4, but they can get the ipv6 address, then I try to ping my router and pve box with ipv6, they all works.

Also, I did not change any other things, so what changed caused my lxc container and windows can not get ipv4 address?

 

[steve3d]

and there are another pve box in my office, it also running at 6.5.11-7 kernel, the vm on this office box can actually get the ipv4 from dhcp server.

Now I'm very confused...