I followed this tutorial to attempt to enable NIC teaming/binding. Running Fedora 34. After running
nmcli con up bond0 the server list Internet connection and could not ping out (neither by IP nor hostname). So I set about to undo it. I went ahead and used the
nmcli commands to delete the bond as well as the slaves. Then I simply configured 1 of the 2 1 GB NIC cards with its usual IP address. And still, no ping, replies with
Destination Host Unreachable. And ssh gets
No route to host.
arp -n has
HWaddress 150.x.x.x as (incomplete) as well as the gateway
150.x.x.y as (incomplete)
150.x.x.x dev eno3 FAILED
150.x.x.y dev eno3 FAILED
Based on some Red Hat troubleshooting suggestions,
I only received an
ARP Request but don’t see an incoming
tcpdump -n -i eno3 arp and host 150.x.x.x or 150.x.x.y dropped privs to tcpdump tcpdump: verbose output suppressed, use -v[v]... for full protocol decode listening on eno3, link-type EN10MB (Ethernet), snapshot length 262144 bytes 14:45:46.140849 ARP, Request who has 150.x.x.x (Broadcast) tell 150.y.y.y., length 28 14:45:53.962633 ARP, Request who has 150.x.x.y (Broadcast) tell 150.y.y.y, length 28 T
I deleted the profiles in the NM GUI and recreated them. Configured them as usual. Nothing. Rebooted. Deleted them from
nmcli, rebooted, recreated, still no ping.
Traceroute fails with
30 hops max.
Here’s an obfuscated screenshot of NM GUI.
What else can I try? I’m a bit desperate here…
I even tested switching from NM to
systemd-networkd and the state from
networkctl -n 0 status shows
routable, but still no ping nor ssh out by IP address. Rebooted again too.
And based on another suggestion, I tried:
tcpdump -n eno3 'host [150.x](https://22.214.171.124).x.x. and icmp' dropped privy to tcpdump tcpdump: verbose output suppressed, use -v[v]... for full protocol decode listening on eno3, link-type EN1OMB (Ethernet), snapshot length 262144 bytes
And when I ran ping to the IP nothing happens. firewalld and fail2ban are off for now and I ran