# DF-3301 carp HMAC key verification (fresh capture)
pkt 0 vhid=1 counter=08d05d11ccef4ce7 hmac(zero-padded ascii) match=True
pkt 1 vhid=1 counter=54f437db853ffa57 hmac(zero-padded ascii) match=True
pkt 2 vhid=1 counter=db1587a599da6a0e hmac(zero-padded ascii) match=True
pkt 3 vhid=1 counter=b51a57586eba03b4 hmac(zero-padded ascii) match=True
ALL: True -> HMAC-SHA1 key IS the raw zero-padded ASCII passphrase (no KDF)