Maybe hardware issue, but the NIC hosting the experiment link is not reachable.
root@node9:~# ip add show eth3
5: eth3: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN group default qlen 1000
link/ether 00:04:23:b7:42:4f brd ff:ff:ff:ff:ff:ff
altname enp9s4f1
inet
10.10.1.10/24 brd 10.10.1.255 scope global eth3
valid_lft forever preferred_lft forever
root@node9:~# ping node0
PING node0 (10.10.1.1) 56(84) bytes of data.
^C
--- node0 ping statistics ---
3 packets transmitted, 0 received, 100% packet loss, time 2050ms
root@node9:~# ifconfig eth3
eth3: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 10.10.1.10 netmask 255.255.255.0 broadcast 10.10.1.255
ether 00:04:23:b7:42:4f txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
root@node9:~#