TCP reorders segments just fine but it treats disordering as a congestion signal and slows down. That's why link aggregation frequently uses the technique of pi

TCP reorders segments just fine but it treats disordering as a congestion signal and slows down. That's why link aggregation frequently uses the technique of pinning flows to a single link- to minimize disordering so as to avoid triggering TCP congestion control. In Linux, you can change the sensitivity to disordering by writing to /proc/sys/net/ipv4/tcp_reordering.