dhcpcd-discuss

Hi everyone, this is my first mail in this mailing list.

I'm using dhcpcd 6.11.5 on an embedded device with yocto thud (Linux 4.9
based).
I'm using the official porting of dhcpcd in open-embedded, but probably
this is not relevant.

I'm trying to run Apple bonjour conformance test 1.5.0 released at the
beginning of December. Everything is perfect with ipv6, but when I try with
IPv4 I get en error about arp announcements.

Conformance test runs this test (as defined by Apple): "The operator
disconnects and reconnects the device's network cable. The test tool
verifies that the device repeats its address probing to verify that its
address is still unique. The test tool denies the first probe and verifies
that the device picks a new address and probes/announces again. It is a
warning if the device does not use its original address as its first
probing candidate."

But it throws this message:" arp src dst address mismatch: Did not receive
2 announcements after 3 unanswered probes" because it is an arp packet with
target address equals to the DNS IPv4 address (because I'm running also
mdns).

As I know this apr behaviour is defined in rfc 5227, but it seems that
dhcpcd is not following the specification about 3 probes and 2 arp
announcements.

I'm not an expert about networking in Linux, so I could saying stupid
things.

Is this an issue of dhcpcd 6.11.5? How can I fix it to pass certification?
Dhcpcd 7 fixes this problem (I cannot try it quickly because the porting is
still not available and it isn't so simple).

Thank u.