Remove errant double quote.
Merge pull request #695 from N0YB/Advanced_DHCP_Client_Options

Remove errant double quote.
Remove duplicated line that makes dhcp6c not run correctly
Add group_ports()
Add a new alias type, URLs containing Ports
Resolves #2910. Make apinger write its status file just after starting so that thing work as expected
Add an option to check certificate for https URL aliases
Create a function to download a file using curl
Remove useless code
Use download_file() and check ssl certificates
Process zipped aliases list
Fix set/unset of checkaliasesurlcert
Fix whitespaces
Remove extra { wrongly added on last commit
Fix whitespaces
Fix a small issue when disable a boolean option and save, it shows option as enabled
Correct DHCPv6 rules test to also include a check for DHCPv6 relay. Fixes #3074
When a CARP VIP transitions to master, we need to bump servers also, otherwise a transition from disabled or init may not properly (re)attach to the IP address.
Remove unecessary var initialization
Fixes #2495. On trigering of rc.newwanip remove all ipaliases from the interface since they will be readded later on. This will also make sure to have the correct address order