> LookupMX and Resolver.LookupMX now return DNS names that look like valid IP address, as well as valid domain names. Previously if a name server returned an IP address as a DNS name, LookupMX would discard it, as required by the RFCs. However, name servers in practice do sometimes return IP addresses.
Ah, intentionally making code not standards compliant.
Standards are toilet paper in the general case. Only in the rare cases where reality matches it does it matter.Anyone can write anything on a piece of paper. What code is executing on the DNS server at the end of the day is what matters.
Ah, intentionally making code not standards compliant.