<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi, folks. I was just looking into the configuration and log files of our igate and was confused about something, hoping you can help.<div><div><br></div><div>We have a bidirectional igate, GERLCH, out in the Nevada desert. It's running aprs4r under linux.</div><div><br></div><div>The problem I'm seeing is typified by the following packet exchange. We hear a message on RF and gate it to APRS-IS:</div><div><br></div><div>2012-05-17 07:58:45 recv on rf0: W7DEM-6 -> APBPQ1 via [SNOW*, VIRGPK*, WIDE2*]: (=3909.20N/11944.40Wo BPQ32 Igate V 5.2.6.1 )<br>2012-05-17 07:58:45 gating from rf0 to is0, message: W7DEM-6 -> APBPQ1 via [SNOW*, VIRGPK*, WIDE2*]: (=3909.20N/11944.40Wo BPQ32 Igate V 5.2.6.1 )<br>2012-05-17 07:58:45 send on is0: W7DEM-6 -> APBPQ1 via [SNOW*, VIRGPK*, WIDE2*]: (=3909.20N/11944.40Wo BPQ32 Igate V 5.2.6.1 )</div><div><br></div><div>A second later, we get a message via APRS-IS which looks to be something that W7DEM-6 sent only to APRS-IS:</div><div><br>2012-05-17 07:58:46 message recv on is0: W7DEM-6 -> APBPQ1 via [TCPIP*, QAC, T2SOCAL]: (<IGATE,MSG_CNT=0,LOC_CNT=56)</div><div><br></div><div>Sadly, our igate now gates this junk out onto RF:</div><div><br></div><div>2012-05-17 07:58:46 gating from is0 to rf0, message: W7DEM-6 -> APBPQ1 via [TCPIP*, QAC, T2SOCAL]: (<IGATE,MSG_CNT=0,LOC_CNT=56)<br>2012-05-17 07:58:46 send on rf0: W7DEM-6 -> APBPQ1 via [TCPIP*, QAC, T2SOCAL]: (<IGATE,MSG_CNT=0,LOC_CNT=56)<br><br></div><div>Yuck. This message in particular doesn't seem like it's going to do anyone any favors by sending it out over RF.</div><div><br></div><div>My question: Why would our igate be getting this message from APRS-IS? Is it because we just gated a message to APRS-IS from this station? If so, that seems weird to me. I.e., if I just gated a packet from him, presumably I'm in RF range of him, so why would I need or want APRS-IS to hand me a packet *from* him? (If the packet was a message addressed to him, *that* I could see…)</div><div><br></div><div>Relatedly, is there any automated, algorithmic way that our igate should be able to spot this and say, nah, we don't want to gate this?</div><div><br></div><div>Thanks for any light you can shed on this!</div><div><br></div><div>73,</div><div><br></div><div>Phil, N6TCT</div></div></body></html>