Are we sure timeout of 5 seconds is appropriate? (it FEELS too long)
My intuition says that if a DNS query takes longer than 1 second it took too
long ...
However (consider also the "wait" (-W) parameter for the host command itself)
```
-W wait
Timeout: Wait for up to wait seconds for a reply. If wait is less
than one, the wait interval is set to one second.
By default, host will wait for 5 seconds for UDP responses and 10
seconds for TCP connections. These defaults can be overridden by
the timeout option in /etc/resolv.conf.
See also the -w option.
```
None-the-less, this is a _workaround_ for the issue -- (will the ticket
remain open to fix the underlying issue, or a subsequent issue be
submitted?)
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https://bugs.launchpad.net/bugs/1752411
Title:
bind9-host, avahi-daemon-check-dns.sh hang forever causes network
connections to get stuck
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