On Wed, Sep 01, 2021 at 10:25:25PM -0500, Bob Pearson wrote: > On 9/1/21 10:04 PM, Bob Pearson wrote: > > rdma link has started to fail today reporting an error as follows after working before. > > > > bob@ubunto-21:~$ sudo rdma link add rxe0 type rxe netdev enp0s3 > > > > error: Invalid argument > > > > bob@ubunto-21: > > > > Nothing has changed in the past day or two except I pulled recent changes into rdma-core. This runs after > > typing > > > > export LD_LIBRARY_PATH=/home/bob/src/rdma-core/build/lib/:/usr/local/lib:/usr/lib > > > > which is also the same. Any ideas? > > > > Bob > > > > Update. I then recompiled the kernel after pulling latest changes > and now it works. In theory this shouldn't be necessary. The kernel > APIs should be beckwards compatible. I don't think anything has changed here in a long time, so I have no guess 'rdma link' has no relation to rdma-core either Perhaps your kernel got in a bad state? Jason