Hi,
On a RUT955 in version 6.7.7 with an IPsec configuration and a personalized APN, the router cannot retrieve an IP address even though it is correctly attached to the network on power-up (data status disconnected).
The installation of a later version (6.7.4) does not present this problem.
This problem seems to have been seen in the past and would be solved but a piori not in all cases.
best regards