Entire PF host locks up when changing VTI MTU



  • Hello, I have a point to point IPv4/IPv6 VTI. At this time, whenever I try to change the mtu of the VTI associated with this connection, it locks up my entire box (AMD EPYC 8 core). No matter what I do, no matter how low or high the mtu, it locks up my entire box and ALL routing stops. When routing returns... I can no longer access the VPS using my ordinary WAN connection (WTH). I cannot explain it.

    Can someone point me in the right direction? I don't understand why changing the MTU on a VTI would lock up an entire firewall...


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