https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=210408
Bug ID: 210408
Summary: Problem with outgoing traffic using ipfw and kernel
nat originated from local address
Product: Base System
Version: 10.2-RELEASE
Hardware: amd64
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
CC: [email protected]
There is a problem with outgoing connections made from local address which is
aliased using ipfw kernel nat. Sending out data stops after 20-30 packets.
Connections from other hosts using this host as gateway have no problem.
The problem disappears when RXCSUM,TXCSUM,TSO4,TSO6 are switched off.
The same problem is with natd but then only TSO4,TSO6 needs to be switched off.
NIC driver - igb.
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