I'm running a Raspberry PI3 with Raspbian Jessie. I setup MMDVMHost, P25Gateway and NXDNGateway. Everything works fine with P25Gateway, however communications between MMDVMHost and NXDNGateway is not possible. The ports are correct.
NXDNGateway connects to the reflector and shows traffic, however the traffic is not sent to MMDVMHost, nor is the traffic sent from MMDVMHost to NXDNGateway.
A dump of the ports shows the following.
3300 is the gateway port, 4400 is the mmdvmhost local port.
root@raspberrypi:/home/pi# tcpdump -vvv -i lo -n udp port 4400
tcpdump: listening on lo, link-type EN10MB (Ethernet), capture size 262144 bytes
06:01:59.558518 IP (tos 0x0, ttl 64, id 45486, offset 0, flags [DF], proto UDP (17), length 43)
10.10.10.16.4400 > 10.10.10.16.3300: [bad udp cksum 0x285c -> 0xeea5!] UDP, length 15
06:02:04.560181 IP (tos 0x0, ttl 64, id 45625, offset 0, flags [DF], proto UDP (17), length 43)
10.10.10.16.4400 > 10.10.10.16.3300: [bad udp cksum 0x285c -> 0xeea5!] UDP, length 15
06:02:09.565561 IP (tos 0x0, ttl 64, id 45735, offset 0, flags [DF], proto UDP (17), length 43)
10.10.10.16.4400 > 10.10.10.16.3300: [bad udp cksum 0x285c -> 0xeea5!] UDP, length 15
06:02:14.572701 IP (tos 0x0, ttl 64, id 46186, offset 0, flags [DF], proto UDP (17), length 43)
10.10.10.16.4400 > 10.10.10.16.3300: [bad udp cksum 0x285c -> 0xeea5!] UDP, length 15
root@raspberrypi:/opt/MMDVMHost# tcpdump -vvv -i lo -n udp port 3300
tcpdump: listening on lo, link-type EN10MB (Ethernet), capture size 262144 bytes
09:24:08.094863 IP (tos 0x0, ttl 64, id 45357, offset 0, flags [DF], proto UDP (17), length 43)
127.0.0.1.4400 > 127.0.0.1.3300: [bad udp cksum 0xfe2a -> 0x18d7!] UDP, length 15
09:24:13.097020 IP (tos 0x0, ttl 64, id 45615, offset 0, flags [DF], proto UDP (17), length 43)
127.0.0.1.4400 > 127.0.0.1.3300: [bad udp cksum 0xfe2a -> 0x18d7!] UDP, length 15
09:24:18.102310 IP (tos 0x0, ttl 64, id 45678, offset 0, flags [DF], proto UDP (17), length 43)
127.0.0.1.4400 > 127.0.0.1.3300: [bad udp cksum 0xfe2a -> 0x18d7!] UDP, length 15
09:24:23.108432 IP (tos 0x0, ttl 64, id 46033, offset 0, flags [DF], proto UDP (17), length 43)
127.0.0.1.4400 > 127.0.0.1.3300: [bad udp cksum 0xfe2a -> 0x18d7!] UDP, length 15
I'm running a Raspberry PI3 with Raspbian Jessie. I setup MMDVMHost, P25Gateway and NXDNGateway. Everything works fine with P25Gateway, however communications between MMDVMHost and NXDNGateway is not possible. The ports are correct. NXDNGateway connects to the reflector and shows traffic, however the traffic is not sent to MMDVMHost, nor is the traffic sent from MMDVMHost to NXDNGateway.
A dump of the ports shows the following. 3300 is the gateway port, 4400 is the mmdvmhost local port.
root@raspberrypi:/home/pi# tcpdump -vvv -i lo -n udp port 4400
tcpdump: listening on lo, link-type EN10MB (Ethernet), capture size 262144 bytes 06:01:59.558518 IP (tos 0x0, ttl 64, id 45486, offset 0, flags [DF], proto UDP (17), length 43) 10.10.10.16.4400 > 10.10.10.16.3300: [bad udp cksum 0x285c -> 0xeea5!] UDP, length 15 06:02:04.560181 IP (tos 0x0, ttl 64, id 45625, offset 0, flags [DF], proto UDP (17), length 43) 10.10.10.16.4400 > 10.10.10.16.3300: [bad udp cksum 0x285c -> 0xeea5!] UDP, length 15 06:02:09.565561 IP (tos 0x0, ttl 64, id 45735, offset 0, flags [DF], proto UDP (17), length 43) 10.10.10.16.4400 > 10.10.10.16.3300: [bad udp cksum 0x285c -> 0xeea5!] UDP, length 15 06:02:14.572701 IP (tos 0x0, ttl 64, id 46186, offset 0, flags [DF], proto UDP (17), length 43) 10.10.10.16.4400 > 10.10.10.16.3300: [bad udp cksum 0x285c -> 0xeea5!] UDP, length 15
root@raspberrypi:/opt/MMDVMHost# tcpdump -vvv -i lo -n udp port 3300 tcpdump: listening on lo, link-type EN10MB (Ethernet), capture size 262144 bytes 09:24:08.094863 IP (tos 0x0, ttl 64, id 45357, offset 0, flags [DF], proto UDP (17), length 43) 127.0.0.1.4400 > 127.0.0.1.3300: [bad udp cksum 0xfe2a -> 0x18d7!] UDP, length 15 09:24:13.097020 IP (tos 0x0, ttl 64, id 45615, offset 0, flags [DF], proto UDP (17), length 43) 127.0.0.1.4400 > 127.0.0.1.3300: [bad udp cksum 0xfe2a -> 0x18d7!] UDP, length 15 09:24:18.102310 IP (tos 0x0, ttl 64, id 45678, offset 0, flags [DF], proto UDP (17), length 43) 127.0.0.1.4400 > 127.0.0.1.3300: [bad udp cksum 0xfe2a -> 0x18d7!] UDP, length 15 09:24:23.108432 IP (tos 0x0, ttl 64, id 46033, offset 0, flags [DF], proto UDP (17), length 43) 127.0.0.1.4400 > 127.0.0.1.3300: [bad udp cksum 0xfe2a -> 0x18d7!] UDP, length 15