The documentation for ns_find_tsig() is confused looking at
libbind-6.0/doc/tsig.cat3:
TSIG LOCAL TSIG
NAME
ns_sign, ns_sign_tcp, ns_sign_tcp_init, ns_verify, ns_verify_tcp,
ns_verify_tcp_init, ns_find_tsig -- TSIG system
SYNOPSIS
...
u_char *
ns_find_tsig(u_char *msg, u_char *eom);
...
ns_find_tsig()
msg the incoming DNS message
msglen the length of the DNS message
A cursory review of libbind-6.0/nameser/ns_verify.c confirms that it is
a unsigned character pointer that is expected to point to the
end-of-message.
Regards, Stacey
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