# UDP Multicast and multiple network interfaces

**URL:** <https://community.wowza.com/t/udp-multicast-and-multiple-network-interfaces/40571>\
**Category:** Wowza Streaming Engine\
**Created:** [December 11, 2015, 3:39pm UTC](https://community.wowza.com/t/udp-multicast-and-multiple-network-interfaces/40571 "2015-12-11T15:39:38Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Alexey\_Tsessarskiy](https://avatars.discourse-cdn.com/v4/letter/a/f475e1/32.png) [@Alexey\_Tsessarskiy](https://community.wowza.com/u/Alexey_Tsessarskiy)\
**Post date:** [December 11, 2015, 3:39pm UTC](https://community.wowza.com/t/udp-multicast-and-multiple-network-interfaces/40571/1 "2015-12-11T15:39:38Z")

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Hi,

trying to pull a stream from a multicast ip over udp.

Multicast is available on a second network interface. Found few threads, saying i have to change multicast interface address in VHost.xml and add it into RTP properties in Application.xml

Did both, no joy. Also, in wowza admin panel, while trying to edit a property for VHost, multicastInterfaceAddress\_in in particular, it shows 0, whatever ip address i put in there. XML have a correct ip, shows 0. Adding it in admin panel, save, show 0. In logs it still performs activity from 127.0.0.1

What do i do wrong?

Thank you, Alexey Tsessarskiy.

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**Author:** ![sal\_jefferson](https://avatars.discourse-cdn.com/v4/letter/s/6de8d8/32.png) [@sal\_jefferson](https://community.wowza.com/u/sal_jefferson)\
**Post date:** [December 11, 2015, 11:57am UTC](https://community.wowza.com/t/udp-multicast-and-multiple-network-interfaces/40571/2 "2015-12-11T11:57:08Z")

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Hello.

This may be something the support team needs to look at closer to get an idea of the issue.

Please send a zipped copy of your /conf and /logs folders to support@wowza.com to open a ticket.

Also include a link to this thread for reference.

Regards,

Salvadore