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STUN on 4000 Router interface config defaults to loopback

We have a 4000 Router with 2 NP4T cards, 8 usable ports in total. On this Router we have configured STUN. However, when we write the config all stun interfaces appear to have loopback configured as default. The no loopback command makes no difference. We are unable to get rid of this, does anyone have any ideas??


Re: STUN on 4000 Router interface config defaults to loopback

Since there has been no response to your post, it appears to be either too complex or too rare an issue for other forum members to assist you. If you don't get a suitable response to your post, you may wish to review our resources at the online Technical Assistance Center ( or speak with a TAC engineer. You can open a TAC case online at

If anyone else in the forum has some advice, please reply to this thread.

Thank you for posting.

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