This issue was created in 2014. I just verified that "host" in Ubuntu 18.04.1 still uses hard-coded port 53; there was no progress during last 4 years. It looks like an easy change.
Some hints for an easy test. OpenDNS runs DNS server listening at port 53, 443 and 5353. # host resolver1.opendns.com resolver1.opendns.com has address 208.67.222.222 resolver1.opendns.com has IPv6 address 2620:119:35::35 All these commmands work (test at port 53, 443 and 5353): # nslookup -po=53 www.ubuntu.com 208.67.222.222 # nslookup -po=443 www.ubuntu.com 208.67.222.222 # nslookup -po=5353 www.ubuntu.com 208.67.222.222 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1318975 Title: /usr/bin/host utility cannot change port for DNS querires To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bind9/+bug/1318975/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
