Add support for EDNS(0) Padding Option (RFC7830)
This adds libknot functions to set and read EDNS(0) Padding Option and also adds +padding=N option to kdig. As kdig is diagnostic tools, the TLS is not enforced in kdig.
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This adds libknot functions to set and read EDNS(0) Padding Option and also adds +padding=N option to kdig. As kdig is diagnostic tools, the TLS is not enforced in kdig.