[dns-operations] Firewall defaults and EDNS

[Mark Andrews]

	If you are running a firewall in front of your nameserver
	and it is blocking EDNS Verion 1 queries or EDNS queries
	with flag bits set or EDNS queries with unknown options by
	default could you send the vendor and release image so I
	can generate a list of broken by default for EDNS firewalls.

	dig +edns=1 $zone @$server
	dig +ednsopt=100 $zone @$server	[1]
	dig +ednsflags=0x40 $zone @$server [1]

	Mark

	[1] Requires dig from BIND 9.11 available in the master branch
	at source.isc.org

-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE:	+61 2 9871 4742		         INTERNET: marka at isc.org