iPXE - open source boot firmware [err-orig:4c106035]

This error indicates that DHCP has timed out without receiving a response from a DHCP server.

Things to try:

Check that your DHCP server is online and responding to requests.

Check your DHCP server logs. For example, if you are using ISC dhcpd, you should see something like

    dhcpd: DHCPDISCOVER from 00:18:f3:f0:9e:61 via eth0
    dhcpd: DHCPOFFER on 10.0.0.171 to 00:18:f3:f0:9e:61 via eth0
    dhcpd: DHCPREQUEST for 10.0.0.171 (10.0.0.6) from 00:18:f3:f0:9e:61 via eth0
    dhcpd: DHCPACK on 10.0.0.171 to 00:18:f3:f0:9e:61 via eth0

After the failed DHCP attempt, check the output from the ifstat command to see if iPXE is receiving any packets (the “RX” counter) or experiencing receive errors (the “RXE” counter).

Try configuring an appropriate static IP address on the iPXE client, using the iPXE command line. For example, to configure the static IP address 10.0.0.199/255.255.255.0:
```
    ifopen net0
    set net0/ip 10.0.0.199
    set net0/netmask 255.255.255.0
```
Check that you can ping this IP address from your DHCP server.

Try capturing a packet trace.

Verify portfast is enabled (Cisco networking equipment) or increase the iPXE DHCP timeout

If you are using iPXE with KVM/Xen and your networking is based on a bridge device you Must make sure to include the bridge option: bridge_fd 0 , by default the bridge will timeout for 15 seconds once It “sees” the interface for the first time (i.e. boot…) setting to 0 will force the bridge to immediately pass the DHCP request

Advanced troubleshooting

You can use a packet trace to determine which types of DHCPOFFER have been received by looking at the “seconds elapsed” field in any DHCP packets transmitted by iPXE:

Bit 0	Indicates that a DHCPOFFER containing PXE options has been received
Bit 1	Indicates that a DHCPOFFER containing an IP address has been received

For example, suppose that the packet trace shows a DHCPDISCOVER containing:

The “seconds elapsed” value in this example is 14, which is 0b1110 in binary. Bit 1 is set, indicating that a DHCPOFFER containing an IP address has been received. Bit 0 is not set, indicating that no DHCPOFFER containing PXE options has been received.