Kernel-source-2.6.12 does not exist

[visto]

Breezy Badger ships with kernel 2.6.12-8-386
but kernel-source for the installed version does not exist.

apt-get can only fetch 2.6.11, which does not match, and so gives a huge amount of errors.

I have not installed the 2.6.11 kernel made from the old source, but I suspect it would just crash the system anyway.

[Xian]

The package you want is linux-source-2.6.12.

[.abe]

Am using Breezy Badger 5.10.
I tried downloading the kernel sources with the command:

sudo apt-get install kernel-tree

the response:
E: Couldn't find package kernel-tree

Anybody know anything about this? TIA.