Ethernet does not release DHCP IPs

mionicoiu

New Member
Feb 20, 2025
2
0
1
hi all, I got the below environment, and I am struggling to understand why one of the network cards does not release any DHCP IPs. I got the onboard network card that if I use, does release IPs to the VMs inside of Proxmox, using VirtlIO(paravirtualized), but if use a 2nd network card (10gig), does not release any.


OS: Virtual Environment 8.4.1
Hardware: Asus RS720A-E12-RS12
PCIe 10gig card: Intel

1. Below are the settings on the interface:

auto lo
iface lo inet loopback

iface ens5f0np0 inet manual

auto enp129s0f0np0
iface enp129s0f0np0 inet manual

auto enp129s0f1np1
iface enp129s0f1np1 inet manual

iface ens5f1np1 inet manual

iface enxeaa186f5920a inet manual

auto vmbr0
iface vmbr0 inet static
address 192.168.30.100/24
gateway 192.168.30.1
bridge-ports ens5f0np0
bridge-stp off
bridge-fd 0
#main pipe, do not disable

auto vmbr500
iface vmbr500 inet static
bridge-ports enp129s0f1np1
bridge-stp off
bridge-fd 0

source /etc/network/interfaces.d/*


2. tried the below to see if I get any dhcp flow:

:~# tcpdump -i enp129s0f0np0 port 67 or port 68 -n

tcpdump: verbose output suppressed, use -v[v]... for full protocol decode

listening on enp129s0f0np0, link-type EN10MB (Ethernet), snapshot length 262144 bytes

11:29:14.825025 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:29:15.898654 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:d1:fa:f0, length 300

11:29:19.896640 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:d1:fa:f0, length 300

11:29:27.898863 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:d1:fa:f0, length 300

11:29:43.979119 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:d1:fa:f0, length 300

11:30:15.480043 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:d1:fa:f0, length 300

11:30:20.360658 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:d1:fa:f0, length 300

11:30:28.029275 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:d1:fa:f0, length 300

11:30:43.713286 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:d1:fa:f0, length 300

11:31:36.835972 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 00:fd:45:1f:ab:80, length 316

11:33:07.545922 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from f0:77:c3:96:08:ac, length 328

11:33:07.547537 IP 192.168.20.3.67 > 255.255.255.255.68: BOOTP/DHCP, Reply, length 363

11:34:28.785685 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:34:31.342474 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:34:35.661959 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:34:44.423928 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:35:00.743314 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:35:13.763809 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:35:16.298580 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:35:20.546995 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:35:29.012399 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:35:45.133086 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:35:58.761036 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:36:01.270194 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:36:06.144244 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:36:14.959926 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:36:17.346010 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:d1:fa:f0, length 300

11:36:21.169463 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:d1:fa:f0, length 300

11:36:29.139449 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:d1:fa:f0, length 300

11:36:31.188232 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:36:37.238604 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 00:fd:45:1f:ab:80, length 316

11:36:43.772141 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:36:44.792146 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:d1:fa:f0, length 300

11:36:45.891865 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:36:50.140502 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:36:58.910120 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:37:15.042371 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:37:16.049483 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:d1:fa:f0, length 300

11:37:20.554359 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:d1:fa:f0, length 300

11:37:28.048914 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:d1:fa:f0, length 300

11:37:43.559314 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:d1:fa:f0, length 300

11:41:38.041867 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 00:fd:45:1f:ab:80, length 316

11:42:28.776049 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:42:31.638739 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:42:35.821259 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:42:44.415657 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:43:00.428985 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:43:09.619857 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 60:45:2e:32:e2:45, length 323

11:43:13.769181 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:43:16.411985 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:43:18.476774 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:d1:fa:f0, length 300

11:43:20.656376 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:43:22.663961 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:d1:fa:f0, length 300

11:43:28.728782 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:43:30.665424 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:d1:fa:f0, length 300

11:43:44.809494 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:43:47.156843 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:d1:fa:f0, length 300

11:43:58.780575 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:44:01.373140 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:44:05.541094 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:44:13.606129 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:44:19.908990 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:d1:fa:f0, length 300

11:44:24.746626 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:d1:fa:f0, length 300

11:44:30.043217 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:44:33.223472 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:d1:fa:f0, length 300

11:44:43.770435 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:44:46.352771 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:44:48.831383 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:d1:fa:f0, length 300

11:44:50.408241 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:44:59.250685 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:45:15.440368 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:46:37.595393 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 00:fd:45:1f:ab:80, length 316

11:49:55.699854 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:d1:fa:f0, length 300

11:49:59.601702 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:d1:fa:f0, length 300

11:50:07.064824 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:d1:fa:f0, length 300

11:50:12.926389 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 38:f3:ab:9c:3f:08, length 300

11:50:13.124768 IP 192.168.20.3.67 > 255.255.255.255.68: BOOTP/DHCP, Reply, length 363

11:50:13.125912 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 38:f3:ab:9c:3f:08, length 332

11:50:13.127061 IP 192.168.20.3.67 > 255.255.255.255.68: BOOTP/DHCP, Reply, length 363

11:50:24.063233 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:d1:fa:f0, length 300

11:50:26.755822 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 38:f3:ab:9c:3f:08, length 300

11:50:26.759546 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 38:f3:ab:9c:3f:08, length 335

11:50:28.802016 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:50:31.761810 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:50:36.472720 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:50:44.719167 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:50:56.072547 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:d1:fa:f0, length 300

11:50:59.880837 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:d1:fa:f0, length 300

11:51:01.091121 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:51:08.863222 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:d1:fa:f0, length 300

11:51:13.775932 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:51:16.357061 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:51:21.000845 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:51:24.374829 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:d1:fa:f0, length 300

11:51:29.902793 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:51:37.147515 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 00:fd:45:1f:ab:80, length 316

11:51:46.297825 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:51:58.777850 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:52:01.287626 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:52:05.381016 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

11:52:13.722942 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:24:11:51:97:67, length 287

^C

101 packets captured

101 packets received by filter

0 packets dropped by kernel



3. I tried to set a static IP, even to add “dhcp” in the config, by following the below link and still no luck: https://www.reddit.com/r/Proxmox/comments/fwos39/proxmox_doesnt_dhcp_to_get_ip_address/

4. I run this to see the ethernet details and not sure what the " Current message level: 0x00000007 (7)" error meeans.

ethtool enp129s0f0np0
Settings for enp129s0f0np0:
Supported ports: [ FIBRE ]
Supported link modes: 10000baseT/Full
Supported pause frame use: Symmetric Receive-only
Supports auto-negotiation: No
Supported FEC modes: Not reported
Advertised link modes: 10000baseT/Full
Advertised pause frame use: No
Advertised auto-negotiation: No
Advertised FEC modes: Not reported
Speed: 10000Mb/s
Duplex: Full
Auto-negotiation: off
Port: Direct Attach Copper
PHYAD: 0
Transceiver: internal
Supports Wake-on: d
Wake-on: d
Current message level: 0x00000007 (7)
drv probe link
Link detected: yes

5. I set the below still no luck
ethtool -s enp129s0f0np0 speed 10000 duplex full


Any help? Do I need to set a DHCP server inside of the Plex server so it can release IPs? if so why is the onboard NIC releases IPs? thanks all.
 
Last edited: