[mirror-admin] please use ASNs, delete redundant netblocks

[Matt Domsch]

Hi all.  For a few months now, Fedora's MirrorManager instance has had
the ability for mirrors to specify the BGP ASN of your network, in
addition to separately listing your netblocks.

Some sites have quite a few netblock entries, which are all covered
now by the single ASN.  As the lookups on each client request must go
through all of the netblock entries in the database to some extent,
the now-redundant netblock entries only serve to slow things down,
even if it's just a little bit.

Please review your Host entries in MirrorManager, and if you have set
an ASN, and if your netblock lists are completely covered by your ASN
setting, please delete your netblock entries.

Thanks,
Matt

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Matt Domsch
Technology Strategist, Dell Office of the CTO
linux.dell.com & www.dell.com/linux

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