Changing an IPSEC endpoint's IP address

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  1. Edit /usr/local/etc/racoon/ipsec.conf and change the IP in the SPD lines that are relevant.
  2. Edit /usr/local/etc/racoon/psk.conf and change the IP that the pre-shared-key belongs to.
  3. Edit /etc/pf.conf and update vpn-clients table with the new IP.
  4. Destroy gif(4) tunnel and recreate (see note at bottom)
  5. Edit /etc/rc.local and synchronize changes with what happens there.
  6. Reload SPDs: 'setkey -F ; setkey -f /usr/local/etc/racoon/ipsec.conf'
  7. Restart racoon: '/usr/local/etc/rc.d/racoon restart'
  8. Watch logfile: 'tail -f /var/log/security'

 # ifconfig gif0 down delete
 # ifconfig gif0 destroy
 # ifconfig gif0 create
 # ifconfig gif0 inet AAA.AAA.AAA.AAA BBB.BBB.BBB.BBB netmask 0xffffffff
 # ifconfig gif0 tunnel XXX.XXX.XXX.XXX YYY.YYY.YYY.YYY up