Hello, I need to send coa update to mikrotik once the client reached the limit. But its not sending the request and I am receiving the below error. -------------- Thu Jul 2 13:07:22 2015 : Info: WARNING: Empty pre-proxy section. Using default return values. Thu Jul 2 13:07:22 2015 : Debug: ... adding new socket proxy address * port 46906 Thu Jul 2 13:07:22 2015 : Info: ERROR: Failed to create a new socket for proxying requests. Thu Jul 2 13:07:22 2015 : Debug: ERROR: Failed to insert CoA request into proxy list. ----------- We have opened the port 3799 in the mikrotik router also. In orginate-coa file I have given the below parameters. -------------- home_server Mikrotik-coa { type = coa # # Note that a home server of type "coa" MUST be a real NAS, # with an ipaddr or ipv6addr. It CANNOT point to a virtual # server. # ipaddr = 192.168.1.1 port = 3799 # This secret SHOULD NOT be the same as the shared # secret in a "client" section. secret = mikrotik # CoA specific parameters. See raddb/proxy.conf for details. coa { irt = 2 mrt = 16 mrc = 5 mrd = 30 } } --------------- Please help what I am doing wrong. If I use radclient command coa is updating in mikrotik.