Latest bind9 update will not launch after upgrade.

[Mark Lucas via macports-users]

I just had to reboot my machine and latest version of bind9 (bind9 @9.20.9_0) 
will no longer launch.
Tried reinstalling on another machine and have the same problem.
Looking at the contents of org.macports.bind9.plist file the program args have 
changed from;-


<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN"
"http://www.apple.com/DTDs/PropertyList-1.0.dtd"; >
<plist version='1.0'>
<dict>
<key>Label</key><string>org.macports.bind9</string>
<key>ProgramArguments</key>
<array>
        <string>/opt/local/bin/daemondo</string>
        <string>--label=bind9</string>
        <string>--start-cmd</string>
        <string>/opt/local/sbin/named</string>
        <string>-u</string>
        <string>named</string>
        <string>-f</string>
        <string>;</string>
        <string>--restart-netchange</string>
        <string>--pid=exec</string>
</array>
<key>Disabled</key><true/>
<key>KeepAlive</key><true/>
</dict>
</plist>

to 

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" 
"http://www.apple.com/DTDs/PropertyList-1.0.dtd";>
<plist version="1.0">
<dict>
        <key>Disabled</key>
        <true/>
        <key>KeepAlive</key>
        <true/>
        <key>Label</key>
        <string>org.macports.bind9</string>
        <key>ProgramArguments</key>
        <array>
                <string>/bin/sh</string>
                <string>-c</string>
                <string>/opt/local/bin/daemondo --label=bind9 --start-cmd 
/opt/local/sbin/named -u named -f ; --restart-netchange --pid=exec</string>
        </array>
</dict>
</plist>

Could this be the source of the problem?
Does anyone else have this issue?
Thanks.

Mark Lucas