The next_node name should be a name with a dot in it to avoid (mobile) browsers interpreting "nextnode" as searchphrase. (You need to enter http://manually.. nobody wants this ;)
Another suggestion was to change it to gluon.nextnode, but that would be longer,
gluon-core: dns-cache documentation polish
Now its clear that upstreams severs normally means "community gateways".
* added cacheentries to description
* made upstream server description more general
* description of the A and AAAA-records for next_node added
* mention of Cache not being allocated when not set in site.conf
* dns-cache doku polish
