Bug 697833

Summary:	yast2-printer: cannot ping IPv6 CUPS servers
Product:	[openSUSE] openSUSE 11.4	Reporter:	Roven Gabriel <nevor>
Component:	YaST2	Assignee:	Johannes Meixner <jsmeix>
Status:	RESOLVED FEATURE	QA Contact:	Jiri Srain <jsrain>
Severity:	Normal
Priority:	P3 - Medium	CC:	jsmeix
Version:	Final
Target Milestone:	---
Hardware:	All
OS:	openSUSE 11.4
Whiteboard:
Found By:	---	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---

Description Roven Gabriel 2011-06-03 01:59:33 UTC

User-Agent:       Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/534.24 (KHTML, like Gecko) Ubuntu/10.10 Chromium/11.0.696.68 Chrome/11.0.696.68 Safari/534.24

After having manually configured /etc/cups/client.conf with an IPv6 server, Yast keeps displaying warnings about the server not being pingable although everything works fine. After the acceptation of all the warnings and the suppression of the server dismissed, the printer is finally displayed as expected but the warnings come back eventually.

Reproducible: Always

Steps to Reproduce:
1. Having an IPv6 cups server
2. Configure /etc/cups/client.conf with the address
3. Run the yast printer utility
Actual Results:  
A bunch of warnings about the cups server not pingable, an advise of suppressing the server. The printer actually shows up into the list.

Expected Results:  
Yast being able to ping the server and displaying directly the printer.

/etc/cups/client.conf :
ServerName [fd53:2e0:ce2a:4::1] 

Error details : 
The server '[fd53:2e0:ce2a:4::1]' is not accessible via port 631 (IPP/CUPS)
The server '[fd53:2e0:ce2a:4::1]' does not respond to a 'ping' in the network.
The server '[fd53:2e0:ce2a:4::1]' is not known by the DNS.

Comment 1 Johannes Meixner 2011-06-09 07:52:20 UTC

This is only a false test result in yast2-printer.

CUPS supports IPv6 - therefore printing works.

For now all you can do is to ignore such false test results.


Currently there is not any kind of special IPv6 support in yast2-printer.

Currently IPv6 works only where it is compatible to IPv4
but there are cases where IPv6 needs special handling.

For example the tests whether or not a remote host is accessible
run "ping <IP-address or hostname>" which fails if IP-address is
an IPv6 address because for IPv6 ping6 must be used.

Unfortunately ping6 cannot be used for IPv4 addresses so that
yast2-printer needs to implement special distinction of cases
in particular if a hostname is given depending on whether or not
the hostname has an IPv4 or IPv6 address or both.

Probably there are some more special distinction of cases needed
to distinguish between IPv4 and IPv6 stuff.

I will file a FATE feature request to get this implemented.

Comment 2 Johannes Meixner 2011-06-09 08:48:32 UTC

Created openSUSE webFATE feature request
"Explicit IPv6 support for YaST printer module"
https://fate.novell.com/312491