How to troubleshoot NIS binding problems on OS X 10.8 Mountain Lion?

I am trying to setup NIS on OS X 10.8 but it fails for some reasons. I tried to add the NIS domain using the Directory Utility.app but when I go to Directory Editor tab and select my NIS node, I do get an error: Connection failed to node '/NIS/uk.example.com' (2100) **On OS X 10.8 machine** * uk.example.com is the domainname (does *not* solve in DNS) * nis2.uk.example.com is the ypbind server (does solve in DNS) * I am already on corporate LAN and I can ping nis2.uk.example.com * domainname returns uk.example.com * ypbind -d prints 'ypbind: returned from 10.80.16.129 about uk.example.com' but it does not return, I need to press Ctrl-C.

dhcp-3-130:~ sorins$ rpcinfo -p
   program vers proto   port
    100000    2   udp    111  portmapper
    100000    3   udp    111  portmapper
    100000    4   udp    111  portmapper
    100000    2   tcp    111  portmapper
    100000    3   tcp    111  portmapper
    100000    4   tcp    111  portmapper
    100007    2   udp    845  ypbind
    100007    2   tcp   1009  ypbind

dhcp-3-130:~ sorins$ sudo automount -vc
automount: /net updated
automount: /home updated
automount: /Network/Servers updated
automount: no unmounts

ypwhich
nis2.uk.example.com

** On a reference Ubuntu, in the same LAN, where NIS works ** ypbind -d 31213: parsing config file 31213: Trying entry: domain uk.example.com server 10.80.16.129 31213: parsed domain 'uk.example.com' server '10.80.16.129' 31213: add_server() domain: uk.example.com, host: 10.80.16.129, slot: 0 31213: [Welcome to ypbind-mt, version 1.20.1] So Ubuntu works, but on OS X it doesn't. **Why?**