Use the 11th column for the radius context rather than overriding the interim interval field with it. Fixes #3447
Use descr as the field name for voucher description so it gets CDATA protection. Fixes #3441
Provide upgrade code after changes done for Ticket #3441
Consider setting of noconcurrent login for passthrough expiry of users. Fixes #3340
Enhanced validation of general DNS servers and gateways
Merge pull request #921 from phil-davis/RELENG_2_1

Enhanced validation of general DNS servers and gateways
Put a kludge for now which Fixes #3280. It should be improved later on to have proper handling and overloading of configuration functions
Grab exec result just to be careful
Use htmlspecialchars(), a better solution for #2952
Normally when an ip is set the interface comes up on BSD stacks. Though push this commit which Fixes #3281
Fix typo on variable name and really add custom options for dhcpdv6
Use correct parameter (bootfile-url) to configure netboot on DHCPdv6, it fixes #3421
XHTML Compliance

RRD Graphs Update
Use CDATA section instead of clunky decode hex value for ampersand in script.