Yes, another disadvantage is caching bypass for those requests. We want native dns zone forward support! )Also don't forget L7 filter is just an ugly hack. Well, maybe not exactly ugly, in fact it's pretty clever, but still a hack with significant disadvantages.
Yes, but this method does not allow to specify multiple DNS for redirection. Single point of failure.For long time I were using layer 7 filter which pretty nice handles dns-over-udp.
I have the same issue, but only with "RegExp" dns entries.RB2011 6.6
DNS Static change bug
removing a static dns name does not remove it from cache even after a flush, only way to clear is a reboot