pfSense

This is 2020. Issue #9245

Update copyright notice years. Issue #9245

IPsec swanctl conversion. Implements #9603

• Converted IPsec configuration code from ipsec.conf ipsec/stroke style
  to swanctl.conf swanctl/vici style. Issue #9603
• Split up much of the single large IPsec configuration function into
  multiple functions as appropriate....

Fix random typos

Fix state kill ordering in rc.newwanip. Fixes #4674

Move state kill to after new rules and routing have been setup.
Otherwise there is a race condition where new states could be created
before the new rules and routing are in place.

Fix copyright message years to reflect BSDP -> ESF -> Netgate

routing, when a new pppoe connection is made the gatewaymonitor should be started before decisions about default route can be properly made. also for 'automatic' provide a fallback to the first enabled gateway thats configured, just in case..

routing, fix setting the default-route when the configured default gateway is a dynamic pppoe gateway

routing, rc.newwanip should also set default-route while booting for ppp interfaces

otherwise we might end up without a default as the bootup script does not wait for ppp interface to obtain the ip, unlike with dhcp interfaces. https://redmine.pfsense.org/issues/8561

Update the Copyright notice for pfSense.

Use correct wording for log output when IP address has changed and states are killed accordingly

Improve log output when ip_change_kill_states is set.

Move copyright from ESF to Netgate

Ticket #3734: Replace etc/inc/IPv6.inc by pear-Net_IPv6 port

Move to Apache License 2.0

Review license / copyright on all files (final round)

Review license / copyright on all files (1st round)

fix booting check

Setup gateway monitors and exit in rc.newwanip(v6) if system is booting. Ticket #6186

Log if rc.newwanip(v6) is called with empty interface.

Doesn't seem to be any reason rc.newwanip should skip things while the system is booting. Ticket #5952

Revert this because of issues in Ticket #5888, will fix #4312 differently. Revert "interface_bridge_add_member is inadequate for adding a bridge member that may have not existed at the time of bridge interface's creation. interface_bridge_configure on the interface's bridge ensures all settings (private, etc.) are applied. Ticket #4312"...

Import David W's patch fixing issues with dhcp6c being launched multiple times in some circumstances. Ticket #5621

interface_bridge_add_member is inadequate for adding a bridge member that may have not existed at the time of bridge interface's creation. interface_bridge_configure on the interface's bridge ensures all settings (private, etc.) are applied. Ticket #4312

Code style and white space in etc

Kicking ntpd in rc.newwanip(v6) dates back to OpenNTPD which didn't have dynamic interface scanning support. This seems to be the source of crashes in ntpd as described in Ticket #4155, and appears to be unnecessary.

Move main pfSense content to src/