GTM iRule split DNS

Ahhh... You sound like you're editing the config files by hand... Why not use tmsh to do this? e.g. something like

tmsh create ltm data-group ....

to give something like

ltm data-group internal local_address_class {
  records {
    10.0.0.0/8 {
        data internal
    }
  }
 type ip
}

The translation data-groups (e.g. gte_translate_internet) will look something like this

ltm data-group internal gte_translate_internet {
  records {
    192.168.99.25/32 {
        data 172.16.1.1
    }
  }
  type ip
}

and is again created (Or edited) using tmsh (or the GUI)

create ltm data-group internal test  { type ip records add { 192.168.22.33 { data 172.16.1.1 }}}

obviousy if your DG already exists use modify, not create.

H