The DNS responder was setting RCODE=NXDOMAIN (Name Error) any time the
answer section was empty, including for names that exist in the
lighthouse but lack a record of the requested type (e.g. an AAAA query
for a v4-only host). Per RFC 2308 §2.1, NXDOMAIN means "the domain
referred to by the QNAME does not exist", and per RFC 2308 §2.2 a name
that exists with no record of the requested type must be answered with
RCODE=NOERROR and an empty answer section (NODATA).
The practical fallout: busybox ping in Alpine issues AAAA first, treats
NXDOMAIN as a hard failure, and never falls through to A. Returning
NODATA lets the resolver continue to the A query as it should.
Track whether any queried A/AAAA name is known in either map and only
set RcodeNameError when no queried name exists at all.
* Fix typo in Wireshark dissector
* Fix wireshark dissector prefs_changed logic
The previous logic had several issues:
- Changing only the port number (without toggling all_ports) would
not re-register the dissector on the new port.
- Turning all_ports off would remove all registrations but only
re-add the specific port inside a branch that also required
all_ports to have changed, and never updated default_settings.port.
Simplify to: remove all registrations, then register based on current
prefs, then update the cached state.
- Accept certs signed by trusted CAs
- Username must match the cert principal if set
- Any username can be used if cert principal is empty
- Don't allow removed pubkeys/CAs to be used after reload
Fixes#8.
`nebula-cert ca` now supports encrypting the CA's private key with a
passphrase. Pass `-encrypt` in order to be prompted for a passphrase.
Encryption is performed using AES-256-GCM and Argon2id for KDF. KDF
parameters default to RFC recommendations, but can be overridden via CLI
flags `-argon-memory`, `-argon-parallelism`, and `-argon-iterations`.
John Maguire