[c-nsp] DHCP relay still forwarding to old helper even if it's removed or changed

[Jason Lixfeld]

Thanks for the suggestion, Chuck.  Sadly, no dice.  I’m still see DHCP packets to the previously configured helper.

> On Jan 19, 2015, at 1:49 PM, Church, Charles <charles.dav.church at hp.com> wrote:
> 
> Maybe try 'no service dhcp' and then put it back in to restart the process?
> 
> Chuck
> 
> 
> Sent from my Verizon Wireless Galaxy S4
> 
> 
> -------- Original message --------
> From: Jason Lixfeld
> Date:01/19/2015 1:10 PM (GMT-05:00)
> To: c-nsp
> Subject: [c-nsp] DHCP relay still forwarding to old helper even if it's	removed or changed
> 
> I’ve got a 4500/Sup7L-E running 3.3.2SG (15.1(1)SG2) with an SVI configured to use a DHCP relay (ip helper-address).
> 
> I tried to change the helper address, but after making the change, the box was still routing broadcasts to the old helper.
> 
> I’ve seen this once before and did a bunch of troubleshooting, but couldn’t find a workaround short of rebooting the box.  I went so far as to try and delete and recreate the SVI with the interesting helper config on it, but even still, it sends to the original helper address.
> 
> Has anyone seen anything like this in the wild before?  I know this is running really old code and I have a plan in the works to upgrade all the boxes running this version to 3.6E where this and a bunch of other bugs are fixed, but I’m hoping that I can effect some sort of a workaround for this particular issue until then.
> 
> Thanks in advance.
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