Source code is scctx->isc_tx_csum_flags = CSUM_TCP | CSUM_UDP | CSUM_TSO | CSUM_IP6_TCP \ | CSUM_IP6_UDP | CSUM_IP6_TCP; Maybe better code scctx->isc_tx_csum_flags = CSUM_TCP | CSUM_UDP | CSUM_TSO | CSUM_IP6_TCP \ | CSUM_IP6_UDP | CSUM_IP6_TSO;
Sorry for the noise, just meant to cc marius@.
A commit references this bug: Author: marius Date: Mon Aug 13 20:29:40 UTC 2018 New revision: 337726 URL: https://svnweb.freebsd.org/changeset/base/337726 Log: Remove the duplicated CSUM_IP6_TCP introduced in r311849 from the TX checksum capabilities of IGB-class MACs. While at it, fix the line wrapping. PR: 230571 Changes: head/sys/dev/e1000/if_em.c