char label[25 + strlen(from->name) + strlen(myself->name)];
snprintf(label, sizeof label, "tinc UDP key expansion %s %s", from->name, myself->name);
sptps_stop(&from->sptps);
from->status.validkey = false;
from->status.waitingforkey = true;
from->last_req_key = time(NULL);
char label[25 + strlen(from->name) + strlen(myself->name)];
snprintf(label, sizeof label, "tinc UDP key expansion %s %s", from->name, myself->name);
sptps_stop(&from->sptps);
from->status.validkey = false;
from->status.waitingforkey = true;
from->last_req_key = time(NULL);