My patches for the current verions of ISPConfig are available for download here.
Installation DKIM-Patch see here
Installation add backup size to web backups
tar xfvz ispconfig188.8.131.52.backup_size.tgz
1. Change mysql database
mysql -u root -p
ALTER TABLE `web_backup` ADD `filesize` VARCHAR(10) NOT NULL AFTER `filename`;
2. Set filepermissions and copy new files
chown -R ispconfig.ispconfig server interface
cp -Rp interface /usr/local/ispconfig
cp -Rp server /usr/local/ispconfig
Installation rewrite ip on mirror(s)
patch -p1 < /tmp/ispconfig3053-rewritev6.patch
If all patches are installed, be sure to install DKIM and backup size first and then apply the patch for the rewrite of IP addresses. I will offer shortly patch-files for all patches.