MTU mismatches are hard to solve too. This happens when you have nodes and/or switches that are either misconfigured or don't all support autodiscovery and the

MTU mismatches are hard to solve too. This happens when you have nodes and/or switches that are either misconfigured or don't all support autodiscovery and then have divergent defaults. A typical symptom is that things (e.g., ssh) hang. This typically happens when you use a protocol that uses Kerberos in an Active Directory domain with very large Kerberos tickets. PQ crypto would do this too.