[Bug 1280] New: meta pkttype incompatible? with ingress

[bugzilla-daemon at netfilter.org]

https://bugzilla.netfilter.org/show_bug.cgi?id=1280

            Bug ID: 1280
           Summary: meta pkttype incompatible? with ingress
           Product: nftables
           Version: unspecified
          Hardware: x86_64
                OS: other
            Status: NEW
          Severity: major
          Priority: P5
         Component: nft
          Assignee: pablo at netfilter.org
          Reporter: netfilter at d9c.eu

OS: 4.18.8-arch1-1-ARCH (Archlinux) with statically defined IPv4/IPv6 addresses
and nftables 0.9.0 (problem also occurs with kernel 4.14.70)

#!/usr/bin/nft -f

flush ruleset

table netdev ethernet {
        chain etherfilter {
                type filter hook ingress device eth0 priority 0; policy accept;
                pkttype broadcast counter drop
        }
}

When using the above ruleset, after some time (10 Minutes - 2 hours, seems to
be depending on the background noise like http traffic, ssh brute force
attempts, etc.), the system becomes unresponsive for IPv4 traffic (IPv6 still
works fine) as if everything is getting dropped.

Placing this rule to a "hook prerouting" does not have these problems. 

I am completly in the dark regarding the reason for this, especially since it
is working at first sight.

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