I'm afraid it likely runs a bit deeper than just being "printed in reverse order". I had a Redirect Host of 192.168.107.65 print backwards and actually name resolve w192.z065107168.sea-wa.dsl.cnc.net (65.107.168.192) and thereafter ping returns ceased, ostensibly because it tried to route my private addresses through some dsl client in Seattle. It's now November, and a fresh install of Focal 20.04.1 still has this problem, reported in August. It might be obscure, but it's not trivial.
I hope someone is working on this. Thanks, -MikeB -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to iputils in Ubuntu. https://bugs.launchpad.net/bugs/1892108 Title: ping prints ip address octets backwards on host redirect Status in iputils package in Ubuntu: Confirmed Bug description: Description: Ubuntu 20.04.1 LTS Release: 20.04 Just noticed a weird thing with ping on Ubuntu 20.04, which I recently updated to. This is what I get when pinging a host on my network: user@ubuntu2004:~$ ping 10.156.0.63 PING 10.156.0.63 (10.156.0.63) 56(84) bytes of data. From 10.15.0.1 icmp_seq=2 Redirect Host(New nexthop: 2.0.15.10) The ubuntu2004 machine is located in the 10.15.0.x network. 10.15.0.1 is a DSL router. 10.15.0.2 is a firewall between multiple networks. 10.156.0.63 is a machine on a different local network. All traffic not destined for the internet is routed from 10.15.0.1 to 10.15.0.2, so I would expect the printout to read "New nexthop: 10.15.0.2". However, as you can see this is not the case. Instead the octets are printed in reverse order. To verify this I tried the same on another machine in the same network, running Ubuntu 18.04: user@ubuntu1804:~$ ping 10.156.0.63 PING 10.156.0.63 (10.156.0.63) 56(84) bytes of data. From 10.15.0.1: icmp_seq=2 Redirect Host(New nexthop: 10.15.0.2) As you can see, the printout is correct here: "New nexthop: 10.15.0.2" I further verified the discrepancy by using tcpdump to interpret the ICMP packets on the ubuntu2004 machine, and there seems to be no problem for tcpdump to display the correct IP address. My assumption is that there is something wrong in the print function which displays the IP address for a host redirect. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/iputils/+bug/1892108/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
