I was wondering if anyone could offer some advice/help/clues etc for this problem.
Within the network I administer I use DNS to dish out the wpad script to enable internet access. Recently a couple of new proxy servers were installed and in a attempt to not bloat the original script any further I decided create a new script to issue the wpad config to hosts through the DHCP server using option 252. (What does this have to do with Cisco?) Well from within the segment where the DHCP server is I am able to receive option 252 however from any other VLAN I fail to receive option 252, according to wireshark, I am using ip-helper-address on each VLAN. This is the odd part, I do get option 252 when I run ipconfig /renew from a segment without the DHCP on it…..
Hardware; 6509 chassis with a SUP720 MSFC3 running 12.2(14)SX2