Fix OpenVPN server port validation to disallow "0". 0 is still OK for client port, which is the same meaning as blank/empty. Fixes #7565
Disable internal L2TP users when activating RADIUS, to follow the behavior stated in the GUI. Fixes #7561
Remove unused WINS code for L2TP. Fixes #7559
Use recently added hwaddr field to restore original MAC address
Improve indenting/readability
Refine some syslogd restarts, add a way to send it a HUP to reload w/o a full restart. Part of ticket #7256
Merge pull request #3725 from sestary/master
Use is_numeric() to make sure $prefix is not 0
Merge pull request #3604 from enukane/fix/openvpn-ipv6-remote-netmask-0-treated-as-128
Merge pull request #3556 from doktornotor/patch-3
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