нашел в интернете что 1947 udp - порт хаспа, валит сеть подобными пакетами:
[161047.474743] IPT INPUT packet died: IN=eth1 OUT= MAC=ff:ff:ff:ff:ff:ff:00:0c:29:df:42:cc:08:00 SRC=192.168.1.100 DST=255.255.255.255 LEN=68 TOS=0x00 PREC=0x00 TTL=128 ID=30389 PROTO=UDP SPT=55392 DPT=1947 LEN=48
[161047.474750] IPT INPUT packet died: IN=eth1 OUT= MAC=ff:ff:ff:ff:ff:ff:00:0c:29:df:42:cc:08:00 SRC=192.168.1.100 DST=255.255.255.255 LEN=68 TOS=0x00 PREC=0x00 TTL=128 ID=30389 PROTO=UDP SPT=55392 DPT=1947 LEN=48
[161047.474754] IPT INPUT packet died: IN=eth1 OUT= MAC=ff:ff:ff:ff:ff:ff:00:0c:29:df:42:cc:08:00 SRC=192.168.1.100 DST=255.255.255.255 LEN=68 TOS=0x00 PREC=0x00 TTL=128 ID=30389 PROTO=UDP SPT=55392 DPT=1947 LEN=48
[161047.474759] IPT INPUT packet died: IN=eth1 OUT= MAC=ff:ff:ff:ff:ff:ff:00:0c:29:df:42:cc:08:00 SRC=192.168.1.100 DST=255.255.255.255 LEN=68 TOS=0x00 PREC=0x00 TTL=128 ID=30389 PROTO=UDP SPT=55392 DPT=1947 LEN=48
либо
[160937.293181] IPT INPUT packet died: IN=eth1 OUT= MAC=ff:ff:ff:ff:ff:ff:00:0c:29:df:42:cc:08:00 SRC=192.168.1.100 DST=192.168.1.255 LEN=68 TOS=0x00 PREC=0x00 TTL=128 ID=21253 PROTO=UDP SPT=55392 DPT=1947 LEN=48
[160937.296224] IPT INPUT packet died: IN=eth1 OUT= MAC=ff:ff:ff:ff:ff:ff:00:0c:29:df:42:cc:08:00 SRC=192.168.1.100 DST=192.168.1.255 LEN=68 TOS=0x00 PREC=0x00 TTL=128 ID=21253 PROTO=UDP SPT=55392 DPT=1947 LEN=48
[160937.296230] IPT INPUT packet died: IN=eth1 OUT= MAC=ff:ff:ff:ff:ff:ff:00:0c:29:df:42:cc:08:00 SRC=192.168.1.100 DST=192.168.1.255 LEN=68 TOS=0x00 PREC=0x00 TTL=128 ID=21253 PROTO=UDP SPT=55392 DPT=1947 LEN=48
[160937.296235] IPT INPUT packet died: IN=eth1 OUT= MAC=ff:ff:ff:ff:ff:ff:00:0c:29:df:42:cc:08:00 SRC=192.168.1.100 DST=192.168.1.255 LEN=68 TOS=0x00 PREC=0x00 TTL=128 ID=21253 PROTO=UDP SPT=55392 DPT=1947 LEN=48
как побороть ?