Como descobrir o PID que gera tráfegos para a porta 9229 no MacBook

Question

Existem tráfegos desconhecidos para a porta 9229 no meu MacBook.

$ sudo tcpdump -i any -n port 9229
......
12:10:39.176502 IP6 ::1.62261 > ::1.9229: Flags [S], seq 638850191, win 65535, options [mss 16324,nop,wscale 5,nop,nop,TS val 1096627032 ecr 0,sackOK,eol], length 0
12:10:39.176520 IP6 ::1.62261 > ::1.9229: Flags [S], seq 638850191, win 65535, options [mss 16324,nop,wscale 5,nop,nop,TS val 1096627032 ecr 0,sackOK,eol], length 0
12:10:39.176535 IP6 ::1.9229 > ::1.62261: Flags [R.], seq 0, ack 638850192, win 0, length 0
12:10:39.176538 IP6 ::1.9229 > ::1.62261: Flags [R.], seq 0, ack 1, win 0, length 0
12:10:39.176741 IP6 ::1.62262 > ::1.9229: Flags [S], seq 3150040653, win 65535, options [mss 16324,nop,wscale 5,nop,nop,TS val 1096627032 ecr 0,sackOK,eol], length 0
12:10:39.176755 IP6 ::1.62262 > ::1.9229: Flags [S], seq 3150040653, win 65535, options [mss 16324,nop,wscale 5,nop,nop,TS val 1096627032 ecr 0,sackOK,eol], length 0
12:10:39.176768 IP6 ::1.9229 > ::1.62262: Flags [R.], seq 0, ack 3150040654, win 0, length 0
12:10:39.176772 IP6 ::1.9229 > ::1.62262: Flags [R.], seq 0, ack 1, win 0, length 0
12:10:39.176892 IP 127.0.0.1.62263 > 127.0.0.1.9229: Flags [S], seq 3515509457, win 65535, options [mss 16344,nop,wscale 5,nop,nop,TS val 1096627032 ecr 0,sackOK,eol], length 0
12:10:39.176908 IP 127.0.0.1.62263 > 127.0.0.1.9229: Flags [S], seq 3515509457, win 65535, options [mss 16344,nop,wscale 5,nop,nop,TS val 1096627032 ecr 0,sackOK,eol], length 0
12:10:39.176927 IP 127.0.0.1.9229 > 127.0.0.1.62263: Flags [R.], seq 0, ack 3515509458, win 0, length 0
12:10:39.176931 IP 127.0.0.1.9229 > 127.0.0.1.62263: Flags [R.], seq 0, ack 1, win 0, length 0
12:10:39.177042 IP 127.0.0.1.62264 > 127.0.0.1.9229: Flags [SEW], seq 204257524, win 65535, options [mss 16344,nop,wscale 5,nop,nop,TS val 1096627032 ecr 0,sackOK,eol], length 0
12:10:39.177059 IP 127.0.0.1.62264 > 127.0.0.1.9229: Flags [SEW], seq 204257524, win 65535, options [mss 16344,nop,wscale 5,nop,nop,TS val 1096627032 ecr 0,sackOK,eol], length 0
12:10:39.177078 IP 127.0.0.1.9229 > 127.0.0.1.62264: Flags [R.], seq 0, ack 204257525, win 0, length 0
12:10:39.177083 IP 127.0.0.1.9229 > 127.0.0.1.62264: Flags [R.], seq 0, ack 1, win 0, length 0
......

Mas não consigo encontrar o processo com netstat .

$ netstat -an | grep 9229
$

Ou com lsof .

$ sudo lsof -i | grep 9229
$ 

Com tcpdump , encontro a string Google.Chrome em alguns dos pacotes. Então acho que o Chrome gera esses tráfegos.

1. Alguém poderia me ajudar a descobrir o PID que gera esses tráfegos?
2. Se é o Chrome, como posso impedir que o Chrome gere os tráfegos sem fechar o Chrome?

Obrigado.