I'm exercising part of the San Diego network by updating the software on a remote Raspberry Pi.
The data path looks like this, starting with marge.ka9q.net:
via Ethernet to ka9q-north (in University City);
via radio to w6qar-south (in Sorrento Mesa);
via ethernet to w6qar-e or w6qar-n (see below);
via radio to WL7AG-PQ (in Rancho Penasquitos);
via ethernet to WL7AQ-PQ-NE;
via radio to KG6EQU-MCHS (also in Rancho Penasquitos);
via ethernet to KG6EQU-MCHS-PI.