Public bug reported:
Binary package hint: fping
I'm running a mixed IPv4/IPv6 dual-stack environment. fping seems to
work fine for ipv4 only hosts, and fping6 seems to work fine for ipv6
only hosts, but when a host can be found via both, it seems that fping
fails for one or the other:
r...@spooky:~# host firewall
firewall has address 192.168.1.1
firewall has IPv6 address fe80::2b0:c2af:fa6e:1ee8
r...@spooky:~# fping firewall
firewall is unreachable
r...@spooky:~# fping 192.168.1.1
192.168.1.1 is alive
r...@spooky:~# fping6 fe80::2b0:c2af:fa6e:1ee8
fe80::2b0:c2af:fa6e:1ee8 is alive
r...@spooky:~# fping6 firewall
firewall is alive
As you can see, in this example all the fpings worked except for the v4
fping based on dns lookup. It certainly appears that it's getting
confused by DNS returning a AAAA record for the host in question.
** Affects: fping (Ubuntu)
Importance: Undecided
Status: New
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fping broken in mixed ipv4/ipv6 environment
https://bugs.launchpad.net/bugs/489860
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