dhcpcd id different from nfsboot IP-config dhcp id
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| Raspbian |
New
|
Undecided
|
Unassigned | ||
Bug Description
A net-booted pi gets an IP address via dhcp at boot time. This contacts the dhcp server with an ID that appears to be just the hardware ID.
The default installation of the 2015/11/21 Raspbian Jessie release uses dhcpcd with a configuration that causes it to use a different ID. This causes the dhcp server to issue it a different IP address, on a different lease.
The pi then has both IP addresses, and uses the first by default.
However, only the second IP is renewed (by dhcpcd) and thus the first IP ends up expiring, causing various problems.
This can be fixed by one of two changes to dhcpcd.conf:
1) remove the empty 'clientid' line. This causes dhcpcd to use the same ID as the id initially requested at NFS boot time.
2) add 'noalias' so that the dhcpcd-maintained IP address becomes the default address uesd by the system.
(It's not clear from the dhcp server logs how the device ID differs between the two approaches.)
| tags: | added: cmdline.txt dhcp dhcpcd dhcpcd.conf dhcpd duid interfaces netboot nfs |
| Diederik (didi-debian) wrote | #1 |
You should report this on https:/