WAN Connectivity Lost After IPv6 DHCP Renew

priller

Scenario:

Running Native Dual-Stack IPv6 with PD
There was an IPv6 DHCP renewal and a WAN IPv6 address change
IPv6 continued to work, however IPv4 traffic could not pass after rc.newwanipv6 ran.
(Not a typo, IPv6 worked, IPv4 was dead).
The IPv4 address was still assigned, but no connectivity.

Attempt to recover:

Since the Snort service was stopped and would not restart, I reinstalled the package …. no change.
I did a full system reboot .... no change (IPv6 worked, IPv4 did not).
I upgraded to the latest nightly ( Thu Mar 7) ... everything this is working normally.

Version where problem occurred:

2.1-BETA1 (amd64)
built on Sun Mar 3 03:14:49 EST 2013
FreeBSD 8.3-RELEASE-p6

Relevant Logs:

23:00:30 dhcpd: Information-request message from fe80::226:bbff:fe72:48e6 port 546
23:00:30 dhcpd: Sending Reply to fe80::226:bbff:fe72:48e6 port 546

23:00:46 php: : rc.newwanipv6: Informational is starting re1.
23:00:51 php: : rc.newwanipv6: on (IP address: 2001:558:xxxx:xxxx:79d0:5e47:xxxx:4105)

23:00:53 php: : ROUTING: setting default route to 68.32.172.1
23:00:53 php: : ROUTING: setting IPv6 default route to fe80::201:5cff:fe24:9301%re1

23:00:54 check_reload_status: Reloading filter
23:00:54 apinger: Starting Alarm Pinger, apinger(30263)
23:00:54 apinger: bind socket: Can't assign requested address

23:01:00 php: : pfSense package system has detected an ip change 2001:558:xxxx:xxxx:4569:fde3:xxxx:565c -> 2001:558:xxxx:xxxx:79d0:5e47:xxxx:4105 … Restarting packages.

23:01:03 apinger: Exiting on signal 15.
23:01:03 php: : Restarting/Starting all packages.

23:01:04 check_reload_status: Reloading filter

23:01:18 snort[45041]: *** Caught Term-Signal
23:01:19 php: : The command '/usr/local/etc/rc.d/snort.sh stop' returned exit code '1', the output was ''
23:01:22 snort[77775]: FATAL ERROR: pf.conf => Table snort2c don't exists in packet filter: No such file or directory

Other threads about WAN DHCP issues:

Since a few day's losing the wan (dhcp) ip address
http://forum.pfsense.org/index.php/topic,58819.0.html

WAN link does not recovering automatically after ISP connection restored
http://forum.pfsense.org/index.php/topic,53221.0.html

AhnHEL

Saw that as well when the following topic happened to me.

http://forum.pfsense.org/index.php/topic,59876.0.html

There's a workaround in that thread.