Hi Arnaud,
On my setup, I just put the transport option in totem section ( and 2 params in quorom section to avoid Quorom problematic) and it works for me.
logging {
debug: off
to_syslog: yes
}
nodelist {
node {
name: pve2
nodeid: 2
quorum_votes: 1
ring0_addr: pve2
}...