EF_TCP_ISN_OFFSET - EF_TCP_ISN_OFFSET - UG1586

Onload User Guide (UG1586)

Document ID
UG1586
Release Date
2026-06-08
Revision
1.5 English
Name
tcp_isn_offset
Default
65537
Scope
per-stack

Increase in sequence number between subsequent connections reusing the same four-tuple. Lower value allows to reduce use of ISN cache, however potentially being unsafe with some host types or rare use cases.