This is a call for proposals for the 4th RDMA mini-summit at the Linux Plumbers Conference in Lisbon, Portugal, which will be happening on September 9-11h, 2019. We are looking for topics with focus on active audience discussions and problem solving. The preferable topic is up to 30 minutes with 3-5 slides maximum. This year, the LPC will include netdev track too and it is collocated with Kernel Summit, such timing makes an excellent opportunity to drive cross-tree solutions. BTW, RDMA is not accepted yet as a track in LPC, but let's think positive and start collect topics. Thanks