Public bug reported: When running a gratuitous / unsolicited arp via "arping -U" on Ubuntu Focal a return code of 1 is given, instead of always 0 (as there is no arp reply expected).
Focal: --- cut --- # arping -U -c1 -I eth0 127.0.0.1; echo "ReturnCode: $?" ARPING 127.0.0.1 from 127.0.0.1 eth0 Sent 1 probes (1 broadcast(s)) Received 0 response(s) ReturnCode: 1 # arping -V arping from iputils s20190709 --- cut --- see corresponding source at https://github.com/iputils/iputils/blob/13e00847176aa23683d68fce1d17ffb523510946/arping.c#L302. On Ubuntu Bionic this worked fine (and also does on Ubuntu Hirsute again BTW): --- cut --- arping -U -c 1 -I eth0 127.0.0.1; echo "ReturnCode: $?" ARPING 127.0.0.1 from 127.0.0.1 eth0 Sent 1 probes (1 broadcast(s)) Received 0 response(s) ReturnCode: 0 # arping -V arping utility, iputils-s20161105 --- cut --- see corresponding source for that version at https://github.com/iputils/iputils/blob/bffc0e957b98d626ab4cea218c89251201425442/arping.c#L329 or for the version on Hirsute at https://github.com/iputils/iputils/blob/cc16da6b574ce6637f3e6e9ab3c1a728663006ff/arping.c#L302 As you can see by looking at the source arping always statically returns a "0" for unsolicited. ** Affects: iputils (Ubuntu) Importance: Undecided Status: Confirmed -- 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/1953014 Title: Return code for unsolicited arping is 1 instead of 0 Status in iputils package in Ubuntu: Confirmed Bug description: When running a gratuitous / unsolicited arp via "arping -U" on Ubuntu Focal a return code of 1 is given, instead of always 0 (as there is no arp reply expected). Focal: --- cut --- # arping -U -c1 -I eth0 127.0.0.1; echo "ReturnCode: $?" ARPING 127.0.0.1 from 127.0.0.1 eth0 Sent 1 probes (1 broadcast(s)) Received 0 response(s) ReturnCode: 1 # arping -V arping from iputils s20190709 --- cut --- see corresponding source at https://github.com/iputils/iputils/blob/13e00847176aa23683d68fce1d17ffb523510946/arping.c#L302. On Ubuntu Bionic this worked fine (and also does on Ubuntu Hirsute again BTW): --- cut --- arping -U -c 1 -I eth0 127.0.0.1; echo "ReturnCode: $?" ARPING 127.0.0.1 from 127.0.0.1 eth0 Sent 1 probes (1 broadcast(s)) Received 0 response(s) ReturnCode: 0 # arping -V arping utility, iputils-s20161105 --- cut --- see corresponding source for that version at https://github.com/iputils/iputils/blob/bffc0e957b98d626ab4cea218c89251201425442/arping.c#L329 or for the version on Hirsute at https://github.com/iputils/iputils/blob/cc16da6b574ce6637f3e6e9ab3c1a728663006ff/arping.c#L302 As you can see by looking at the source arping always statically returns a "0" for unsolicited. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/iputils/+bug/1953014/+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
