net: consider /dns/localhost as private address #221
Merged
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This fixes IsPrivateAddr check to correctly classify localhost dns addresses as private.
This fixes sub domain check to correctly classify equal domains as sub domains. So /dns/localhost/ is classified as non public. This is similar to https://pkg.go.dev/github.com/miekg/dns#IsSubDomain. I didn't want to import a library for this so I'm using a custom implementation.