# Rocky 9 Linux NFS with UDP

**URL:** <https://forums.rockylinux.org/t/rocky-9-linux-nfs-with-udp/16681>\
**Category:** Rocky Linux Help & Support\
**Tags:** rocky-linux-9\
**Created:** [November 30, 2024, 5:49am UTC](https://forums.rockylinux.org/t/rocky-9-linux-nfs-with-udp/16681 "2024-11-30T05:49:14Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![miltonlie](https://avatars.discourse-cdn.com/v4/letter/m/57b2e6/32.png) [@miltonlie](https://forums.rockylinux.org/u/miltonlie)\
**Post date:** [November 30, 2024, 5:49am UTC](https://forums.rockylinux.org/t/rocky-9-linux-nfs-with-udp/16681/1 "2024-11-30T05:49:14Z")

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Testing NFS service. On nfs-server in /etc/nfs.conf included  
udp=y  
vers3=y

On client side /etc/nfsmount.conf with  
Defaultvers=3  
NFsvers=3  
I’m able to nfs mount.

When I include:  
Defaultproto=udp  
Proto=udp  
I’m not able to nfs mount.  
Get error message:  
mount.nfs: an incorrect mount option was specified.

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**Author:** ![miltonlie](https://avatars.discourse-cdn.com/v4/letter/m/57b2e6/32.png) [@miltonlie](https://forums.rockylinux.org/u/miltonlie)\
**Post date:** [December 1, 2024, 12:56am UTC](https://forums.rockylinux.org/t/rocky-9-linux-nfs-with-udp/16681/2 "2024-12-01T00:56:59Z")

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Found my answer. As of kernel 5.5 UDP is by default disabled. Went with Rocky 8 where UDP is still supported so I don’t have to rebuild kernel to disable CONFIG\_NFS\_DISABLE\_UDP\_SUPPORT.

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**Author:** ![system](https://us1.discourse-cdn.com/flex020/uploads/rockylinux/original/1X/91b7219eec10e30013422e4df76c1d898711a5d5.svg) [@system](https://forums.rockylinux.org/u/system)\
**Post date:** [January 30, 2025, 12:57am UTC](https://forums.rockylinux.org/t/rocky-9-linux-nfs-with-udp/16681/3 "2025-01-30T00:57:24Z")

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