The problems with asymmetric routing - Network Guy
DotW: Issues with Asymmetric Routing - Knowledge Base - Palo Alto Networks
The Concept of Asymmetric routing – IT Tips for Systems and Network Administrators
Unicast flooding due to asymmetric routing – CiscoZine
IP Addressing: NAT Configuration Guide - Interchassis Asymmetric Routing Support for Zone-Based Firewall and NAT [Cisco ASR 1000 Series Aggregation Services Routers] - Cisco
Designs Options for Support of Asymmetric Routing in Firewalls
Asymmetric Routing and Maximum Segment Size differences - Cisco Community
Unicast flooding due to asymmetric routing – CiscoZine
firewall - VRFs to address asymmetric routing with stateful inspection - Network Engineering Stack Exchange