The options are processed left to right so the +notcp has to be after the ixfr=<serial>.
e.g. dig ixfr=<serial> zone +notcp Note, named will for the use of TCP in its UDP response. Below is a query log of ixfr requests with and without tcp. 'T' indicates a TCP connection. 05-Dec-2013 13:11:35.681 client ::1#55802 (dv.isc.org): view external: query: dv.isc.org IN IXFR -ET (::1) 05-Dec-2013 13:11:49.664 client ::1#50513 (dv.isc.org): view external: query: dv.isc.org IN IXFR -E (::1) -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: ma...@isc.org _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users