? AX.25 utilities for 'production' kernel ?

[Charles E. Gelm]

ax25-utils-2.1.42a.tar.gz          AX.25 utilities for Linux 2.1.42 and up
                                   - Compiles without modification on libc5
                                   only.

Is linux kernel 2.2.6 'up' from linux 2.1.42 ?
Is Slackware-4.0 libc5 ?
Are there any AX.25 utilities for 'production' kernels ?

Regards, Chuck

-- 
Researching GELM