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ipfw(4): make O_IPVER/ipversion match IPv4 or IPv6, not just IPv4 by itself
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Authored by nc on Jun 11 2020, 3:54 AM.
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rS362585: ipfw(4): make O_IPVER/ipversion match IPv4 or 6, not just IPv4.
Summary

ipfw(4): make O_IPVER/ipversion match IPv4 or IPv6, not just IPv4 by itself.

Submitted by: Neel Chauhan <neel AT neelc DOT org>

Test Plan

Try this rule:

ipfw add 1 deny all from any to any ipversion 4

It should deny IPv4 packets

Or this:

ipfw add 1 deny all from any to any ipversion 6

It should deny IPv6 packets.

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rS FreeBSD src repository - subversion
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sys/
netpfil/
ipfw/
2 lines

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sys/netpfil/ipfw/ip_fw2.c

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