Package: mtr-tiny Version: 0.94-1+deb11u1 Severity: normal Tags: ipv6 X-Debbugs-Cc: li...@christanell.info
Dear Maintainer, When I'm trying to use mtr to an 'subnet router anycast address' which terminates on a linux router, the router answers with the IPv6 address configured on it's interface and not the anycast address, so the mtr does not stop. (For the example I use the IPv6 documentation address space) Let's say my linux router has the IPv6 2001:db8:0:1::1/64 and I want to make a traceroute to 2001:db8:0:1:: Example: mtr 2001:db8:0:1:: Host Loss% Snt Last Avg Best Wrst StDev 1. XXXX:XXXX::X:XX 0.0% 3 0.7 1.4 0.7 2.6 1.1 2. XXXX:XXXX::X:XX 0.0% 3 2.4 1.3 0.7 2.4 1.0 3. XXXX:XXXX::X:XX 0.0% 3 3.4 4.5 3.4 5.5 1.1 4. 2001:db8:0:1::1 0.0% 3 3.7 3.6 3.5 3.7 0.1 5. 2001:db8:0:1::1 0.0% 3 3.7 3.6 3.5 3.7 0.1 6. 2001:db8:0:1::1 0.0% 3 3.7 3.6 3.5 3.7 0.1 7. 2001:db8:0:1::1 0.0% 3 3.7 3.6 3.5 3.7 0.1 8. 2001:db8:0:1::1 0.0% 3 3.7 3.6 3.5 3.7 0.1 9. 2001:db8:0:1::1 0.0% 3 3.7 3.6 3.5 3.7 0.1 10. ....... In my opinion the mtr does not stop, because it does not get an answer from the requested address, but because it's an 'subnet router anycast address' the router answers anyway, which is correct. Maybe I'm wrong, but I would expect a result like this: Example: mtr 2001:db8:0:1:: Host Loss% Snt Last Avg Best Wrst StDev 1. XXXX:XXXX::X:XX 0.0% 3 0.7 1.4 0.7 2.6 1.1 2. XXXX:XXXX::X:XX 0.0% 3 2.4 1.3 0.7 2.4 1.0 3. XXXX:XXXX::X:XX 0.0% 3 3.4 4.5 3.4 5.5 1.1 4. 2001:db8:0:1:: 0.0% 3 3.7 3.6 3.5 3.7 0.1 As far as I found out, it seems to only appear on linux routers, so I'm not 100% sure if it's a bug in mtr-tiny or a misconfiguration on the linux routers. -- System Information: Debian Release: 11.8 APT prefers oldstable-updates APT policy: (500, 'oldstable-updates'), (500, 'oldstable-security'), (500, 'oldstable') Architecture: amd64 (x86_64) Kernel: Linux 5.10.0-26-amd64 (SMP w/1 CPU thread) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages mtr-tiny depends on: ii libc6 2.31-13+deb11u7 ii libjansson4 2.13.1-1.1 ii libncurses6 6.2+20201114-2+deb11u2 ii libtinfo6 6.2+20201114-2+deb11u2 mtr-tiny recommends no packages. mtr-tiny suggests no packages. -- no debconf information
