bord01                bord02
73.11.144.65          73.11.144.66
     |                     |
     |________     ________|
             _|___|_
            [__ASA__]
     _________|   |_________
     |                     |
   dist01                dist02
73.11.144.71          73.11.144.72


asa config:

static (inside-dist01,outside-bord01) 73.11.144.71 73.11.144.71 netmask 255.255.255.255 norandomseq
static (inside-dist02,outside-bord01) 73.11.144.72 73.11.144.72 netmask 255.255.255.255 norandomseq
static (inside-dist01,outside-bord02) 73.11.144.71 73.11.144.71 netmask 255.255.255.255 norandomseq
static (inside-dist02,outside-bord02) 73.11.144.72 73.11.144.72 netmask 255.255.255.255 norandomseq
static (outside-bord01,inside-dist01) 73.11.144.65 73.11.144.65 netmask 255.255.255.255 norandomseq
static (outside-bord01,inside-dist02) 73.11.144.65 73.11.144.65 netmask 255.255.255.255 norandomseq
static (outside-bord02,inside-dist01) 73.11.144.66 73.11.144.66 netmask 255.255.255.255 norandomseq
static (outside-bord02,inside-dist02) 73.11.144.66 73.11.144.66 netmask 255.255.255.255 norandomseq



yet...

*Jun 19 08:49:08.318 BST: %TCP-6-BADAUTH: No MD5 digest from 73.11.144.72(21025) to 73.11.144.65(179)
etc.