Public bug reported:
Ubuntu 8.04 LTS "Hardy Heron", fully updated
[I think this is gnome-network-admin, but I'm not sure]
[I know I am doing something 'not kosher' here, but it is not expressly
forbidden (the AutoIP RFC 3927 says "should not", not "must not"), and I
need to do it!]
OK, enough justification! On with the bug!
I set my DHCP server to serve addresses in the 169.254.0.X/16 range.
Why? See below. The bug is that the tooltip when you hover over the
network icon in the panel reports the served address as "self-assigned
address", when it is patently served by the DHCP server. It's probably
parsing the address and thinking it's in the Auto-IP address range (it
isn't), and reporting an assumption rather than a fact.
According to RFC 3927, if the AutoIP mechanism needs to generate an
address it has to do so in the 169.254.1.X to 169.254.254.X range,
leaving the 169.254.0.X and 169.254.255.X ranges alone. This is
precisely why I chose the first 'reserved' range as the DHCP range.
Why am I doing this? I'm an embedded developer, and I need to test DHCP
and AutoIP on my ethernet-enabled boards. I can easily fake a DHCP
failure on the board, allowing AutoIP to generate a temporary address,
but when it does so I do NOT want to have to reconfigure the IP
addresses of all the other devices on the network to allow further
testing. By serving up addresses in the reserved ranges, they can still
talk to devices that have failed over with AutoIP.
Just to be clear - I have a small number of development machines and
embedded boards all on the same LAN, so routing is not an issue. My
router/firewall/modem has no problems connecting to the Internet with
this configuration.
** Affects: ubuntu
Importance: Undecided
Status: New
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Network Manager reports 'self-assigned address' when DHCP-assigned
https://bugs.launchpad.net/bugs/250665
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