a BIND 4.9.6 or 8.1.1 server is immune. so, you could upgrade. to so do, see http://www.isc.org/isc/ which will lead you to ftp://ftp.isc.org/isc/. (the root name servers are all running modern software at this point.)
... but not all run BIND 4.9.6 or 8.1.1: $ for i in a b c d e f g h i j k l m; do
echo $i.root-servers.net host -t txt -c chaos version.bind $i.root-servers.net done a.root-servers.net VERSION.BIND TXT "named 4.9.5-P1 Tue Apr 22 16:46:54 EDT 1997\ root@premier1:/usr/local/src/bind/bind-4.9.5-P1-MAK/named" b.root-servers.net VERSION.BIND TXT "8.1.1" c.root-servers.net VERSION.BIND TXT "named 4.9.5-REL Wed Feb 19 16:23:19 EST 1997\ arthur@sol25.sa.psi.com:/opt/dist/sol25/Generic/src/bind-4.9.5p1/bind-ns /named" d.root-servers.net VERSION.BIND TXT "4.9.6-REL+terp_mods" e.root-servers.net VERSION.BIND TXT "8.1.1" f.root-servers.net VERSION.BIND TXT "8.1.1" g.root-servers.net VERSION.BIND TXT "8.1.1" h.root-servers.net version.bind TXT record in class CH not found, server failure i.root-servers.net VERSION.BIND TXT "8.1.1" j.root-servers.net VERSION.BIND TXT "8.1.1" k.root-servers.net VERSION.BIND TXT "8.1.1" l.root-servers.net VERSION.BIND TXT "8.1.1" m.root-servers.net VERSION.BIND TXT "8.1.1"
Juergen Georgi BelWue Network Operations Center RUS University of Stuttgart, Allmandring 30A, 70550 Stuttgart, Germany E-Mail: georgi@belwue.de, Phone: +49 711 685 5739, Fax: +49 711 682357