The present disclosure relates to systems, methods, and computer-readable media for increasing resiliency in distributed units of a virtual radio access network (vRAN) of a telecommunications network (e.g., a 5G telecommunications network). Systems described herein involve establishing, using a middlebox entity, stream control transmission protocol (SCTP) connections between each of multiple distributed units and a centralized unit. The middlebox entity may monitor failure conditions to detect a failure condition of a primary distributed unit and, based on the detected failure condition, quickly re-establish a connection between a backup distributed unit having the SCTP connection previously established with the centralized unit. The features described herein provide additional resiliency by enabling a centralized unit to be timely notified of a distributed unit failure as well as establish communication between the centralized unit and a backup distributed unit without interrupting services or sessions on the telecommunications network.