[jboss-jira] [JBoss JIRA] (JGRP-2254) Add default for dns_address in DNS_PING

[Sebastian Łaskawiec (JIRA)]

Sebastian Łaskawiec created JGRP-2254:
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             Summary: Add default for dns_address in DNS_PING
                 Key: JGRP-2254
                 URL: https://issues.jboss.org/browse/JGRP-2254
             Project: JGroups
          Issue Type: Enhancement
            Reporter: Sebastian Łaskawiec
            Assignee: Bela Ban


Currently we require our user to fill in {{dns_address}} for {{DNS_PING}}. It can be obtained by scanning {{/etc/resolv.conf}} but in case users don't supply anything, we should use some sensible default.

Implementation examples:
* https://github.com/netty/netty/commit/61eea4e107357e3420d37b935856ff7290baff23



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