Hi Geert,
>>> During `ip link set down dev eno5np0` and `ip link set up dev eno5np0`
>>>>> are NO IP-addresses involved.
This interface eno5np0 is configured with the ip addresses(10.45.10.4 ).
# ifconfig
eno5np0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.45.10.4 netmask 255.255.255.0 broadcast 10.45.10.255
ether 88:e9:a4:49:18:48 txqueuelen 1000 (Ethernet)
RX packets 2967346895 bytes 4417546189260 (4.0 TiB)
RX errors 0 dropped 1 overruns 0 frame 0
TX packets 1634521866 bytes 2220475762246 (2.0 TiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
Thanks,
Balaji
On Sun, 8 Oct 2023 at 20:58, Jeffrey Walton <noloa...@gmail.com> wrote:
> On Sun, Oct 8, 2023 at 4:58 AM Geert Stappers <stapp...@debian.org> wrote:
> >
> > On Sun, Oct 08, 2023 at 11:21:10AM +0530, Balaji G wrote:
> > > On Sat, 7 Oct 2023 at 02:50, Jeffrey Walton wrote:
> > > > On Fri, Oct 6, 2023 at 2:04 PM Balaji G wrote:
> > > > >
> > > > > Hi,
> > > > >
> > > > > I am using "Debian GNU/Linux 11 (bullseye)" with kernel version
> 5.16.12.
> > > > > When i do a link up/down i don't see any Gratuitous ARP being sent.
> > > > >
> > > > > # echo 1 > /proc/sys/net/ipv4/conf/eno5np0/arp_notify
> > > > > # ip link set down dev eno5np0
> > > > > # ip link set up dev eno5np0
> > > > >
> > > > > Captured all the packets via tcpdump & the tcpdump is not showing
> any
> > > > > Gratuitous ARP packets.
> > > > >
> > > > > But, with the same commands i could see the Gratuitous ARP being
> sent in
> > > > > Red hat.9.0 (Plow).
> > > > >
> > > > > So, please let me know if this is a specific scenario in Debian 11
> ??
> > > >
> > > > I think that's now Poettering:
> > > >
> > > >
> https://github.com/systemd/systemd/blob/main/src/libsystemd-network/sd-ipv4acd.c#L302
> > > >
> > >
> > > Do you mean this is a known issue & will be fixed in the future
> releases ?
> >
> > Here not Jeff. What I do understand from Jeff message is
> > something like: "I can bitch on systemd, so I do"
> > Time will tell how much Jeff contributes in solving
> > the interesting problem of the invisible gratuitous ARP.
>
> Nope, not that.
>
> I learned a long time ago to answer the question that was asked in the
> body of the post.
>
> You're welcome to complain about Systemd all you like. You won't get
> any complaints from me. It's not a discussion I will engage in.
>
> Jeff
>
