I don't think gp is against the feature. They're saying dog 209.216.230.240 should directly perform a PTR lookup instead of requiring something like dog

I don't think gp is against the feature. They're saying dog 209.216.230.240 should directly perform a PTR lookup instead of requiring something like dog -x 209.216.230.240 Here's how host works when you give it an IP address as opposed to a domain name: $ host 209.216.230.240 240.230.216.209.in-addr.arpa domain name pointer news.ycombinator.com. $ host news.ycombinator.com news.ycombinator.com has address 209.216.230.240