An GSS-TSIG enabled version on nsupdate(1) utility from bind9 package
for Dynamic DNS Update requests as defined in RFC 2136 suitable for
Samba4 zone updates.

Standard GSS-TSIG mode is switched on with the -g flag. A proprietary
variant of GSS-TSIG used by Windows 2000 can be switched on with the -o
flag.

WWW: https://www.isc.org/software/bind