Open odesenfans opened 11 months ago
The issue still occurs on v0.3.0. Another node operator (@aiz) reported the same issue on Scaleway Dedibox servers. It is unclear why IPv6 forwarding breaks IPv6 networking there.
I can reproduce this issue on our VM lab server 2, scaleway Bare Metal server, Debian 12.
The right process for node operators for now:
ALEPH_VM_IPV6_FORWARDING_ENABLED=False
in /etc/aleph-vm/supervisor.env
cat /proc/sys/net/ipv6/conf/all/forwarding # If this returns 1, run the following command
echo 0 > /proc/sys/net/ipv6/conf/all/forwarding
Describe the bug A node operator (TacoMatte) updated their CRN to v0.3.0-rc1 and reported that the version stopped appearing on the account page. Upon investigation, it turns out that their node was not responding to IPv6 ping requests. IPv4 ping requests work fine.
Reverting to 0.2.8 fixes the issue. We tried the following solutions:
ALEPH_VM_NETWORK_INTERFACE
to the correct interface)ALEPH_VM_USE_NDP_PROXY
to false)ALEPH_VM_IPV6_FORWARDING_ENABLED
to false).The two first attempts did not help, but disabling IPv6 forwarding fixes the issue. This is a good workaround for now but limits the features available on such nodes.
Server configuration
Additional context The node operator had to customize their network configuration to enable IPv6:
I will update this issue with additional details on the cloud provider once I receive them.