25 Jan
2014
25 Jan
'14
4:20 a.m.
On Sat, Jan 25, 2014 at 2:39 AM, Randy Bush <randy@psg.com> wrote:
I should be clear that there are no bangs (!) in dns.
the dns is 8-bit clean. bangs, dots (not as separators), blanks, etc. are all valid. some applications may have trouble with use of some of these :)
Not in the right-hand side (RDATA portion) of a type A record. The 32 bits will be interpreted as the bits of an IPv4 address, which are always 4 numeric values (0 to 255) separated by dots. "www.godaddy.com. 14 IN A zippidty-doo.com!" Is right out. If it were a "HS TXT", CH TXT, IN TXT, IN CNAME, IN NS, IN MX, IN SRV, or other similar fields, then sure.
randy
-- -JH