I have private APN with few sim cards. In the old days NetworkManager created ppp connection with my modem and then I've run

ip route add dev ppp0 (or add routing via NM)

And every packet with such destination network was traveling via such Point To Point interface.

Now with WWAN when I add routing without gateway

ip route add dev wwan0 (or add routing via NM)

and get tcpdump on such interface I've got arp requests for destination host and that's it :-/

How to get things working under NM with WWAN ?

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