# Why did recent RealPort upgrade change our tty reference from ttynn01 to tty\_\_dgrp\_\_nn01?

**URL:** <https://forums.digi.com/t/why-did-recent-realport-upgrade-change-our-tty-reference-from-ttynn01-to-tty-dgrp-nn01/14016>\
**Category:** Realport\
**Tags:** driver, redhat, realport\
**Created:** [December 1, 2014, 1:30pm UTC](https://forums.digi.com/t/why-did-recent-realport-upgrade-change-our-tty-reference-from-ttynn01-to-tty-dgrp-nn01/14016 "2014-12-01T13:30:33Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![griffiths](https://avatars.discourse-cdn.com/v4/letter/g/90ced4/32.png) [@griffiths](https://forums.digi.com/u/griffiths)\
**Post date:** [December 1, 2014, 1:30pm UTC](https://forums.digi.com/t/why-did-recent-realport-upgrade-change-our-tty-reference-from-ttynn01-to-tty-dgrp-nn01/14016/1 "2014-12-01T13:30:33Z")

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Recently upgraded from RealPort 1.9-30 to 1.9-34 on Redhat EL 6. Now our /dev references are tty\_dgrp\_aa\_01 when they used to be ttyaa01. ttyaa01 now has a symbolic link to tty\_dgrp\_aa\_01. We want the old dev references back. Thanks.

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**Author:** ![userid0](https://avatars.discourse-cdn.com/v4/letter/u/f6c823/32.png) [@userid0](https://forums.digi.com/u/userid0)\
**Post date:** [December 4, 2014, 12:47pm UTC](https://forums.digi.com/t/why-did-recent-realport-upgrade-change-our-tty-reference-from-ttynn01-to-tty-dgrp-nn01/14016/2 "2014-12-04T12:47:53Z")

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In newer kernels, UDEV is responsible for device creation. The symbolic link of /dev/ttyaa01 will work the same as with previous kernel/driver versions.