Session 2 [ERR]: Invalid session to send RPCs.

[jktjkt]

This is a rather strange error that was observed once through netconf-cli-local:

/ietf-interfaces:interfaces/interface[name='lo']>
/ietf-interfaces:interfaces/interface[name='lo']> cd ietf-ip:ipv4/ietf-ip:address[ip=Session 2 [ERR]: Invalid session to send RPCs.
Error while completing: Failed to send RPC
                                                  cd ietf-ip:ipv4/ietf-ip:address[ip=
In line 1:
Error parsing key values here:
cd ietf-ip:ipv4/ietf-ip:address[ip=
___________________________________^_
/ietf-ip:address[ip= this was left of input
/ietf-interfaces:interfaces/interface[name='lo']> cd ietf-ip:ipv4/ietf-ip:address[ip=Session 2 [ERR]: Invalid session to send RPCs.
Error while completing: Failed to send RPC
Session 2 [ERR]: Invalid session to send RPCs.
Error while completing: Failed to send RPC
                                                  cd ietf-ip:ipv4/ietf-ip:address[ip=
In line 1:
Error parsing key values here:
cd ietf-ip:ipv4/ietf-ip:address[ip=
___________________________________^_
/ietf-ip:address[ip= this was left of input
/ietf-interfaces:interfaces/interface[name='lo']> cd ietf-ip:ipv4/ietf-ip:address[ip=Session 2 [ERR]: Invalid session to send RPCs.
Error while completing: Failed to send RPC
                                                  cd ietf-ip:ipv4/ietf-ip:address[ip=
In line 1:
Error parsing key values here:
cd ietf-ip:ipv4/ietf-ip:address[ip=
___________________________________^_
/ietf-ip:address[ip= this was left of input
/ietf-interfaces:interfaces/interface[name='lo']> cd ietf-ip:ipv4/ietf-ip:address[ip=

The netconf-cli-local talks NETCONF over a local UNIX socket. Maybe this happened because of a restart of netopeer2-server?