New subject: [Bug 555732] Invalid $(hostname -i) usage SuSEconfig.postfix

16 Nov 2009

      http://bugzilla.novell.com/show_bug.cgi?id=555732

           Summary: Invalid $(hostname -i) usage SuSEconfig.postfix
    Classification: openSUSE
           Product: openSUSE 11.2
           Version: Final
          Platform: Other
        OS/Version: Other
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: Other
        AssignedTo: bnc-team-screening@forge.provo.novell.com
        ReportedBy: mt@novell.com
         QAContact: qa@suse.de
          Found By: ---
           Blocker: ---

--- Comment #0 from Marius Tomaschewski  2009-11-16 09:22:19 UTC ---
The use of $(hostname -i) as on 11.2 very easy breaks postfix, because
it returns a _list_ of IP adresses:

xanthos:~ # hostname -i
172.16.10.1 172.16.1.1
xanthos:~ # grep xanthos /etc/hosts
172.16.10.1     xanthos.mat-home.net xanthos
172.16.1.1      xanthos.mat-home.net xanthos

or more worse, like this:

xanthos:~ # hostname -f
localhost
xanthos:~ # hostname -i
127.0.0.1 172.16.10.1 172.16.1.1
xanthos:~ # grep xanthos /etc/hosts
127.0.0.1       localhost xanthos
172.16.10.1     xanthos.mat-home.net xanthos
172.16.1.1      xanthos.mat-home.net xanthos

Note, that this list can also be very easy empty!

This is the case when you disable to write it with 127.0.0.2 to /etc/hosts
(WRITE_HOSTNAME_TO_HOSTS=no), the hostname update via dhcp is disabled
(DHCLIENT_SET_HOSTNAME) or the dhcp server simply does not provide any, ...
finally it may also happen due to an temporary DNS failure.

Please fix, e.g. using a "for i in $(hostname -i) ; do" loop.

Further, $FQHOSTNAME may be "linux.local" on two hosts (opensuse machines).

I don't think that it is helpful to reject mails with "Liar!" -- in worst
case this is an affront and maybe worth a lawsuit in best case bad style.

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[Bug 555732] New: Invalid $(hostname -i) usage SuSEconfig.postfix

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