Estoy utilizando MacOS 11.4 y el firmware padavan en el router. Es bastante lento (de unos pocos a decenas de segundos) cuando me conecto a la página de administración del router desde MacOS, y tcpdump mostró que una gran cantidad de conexiones tcp se atascan en el primer apretón de manos, el router no respondió con SYN /ACK después de MacOS envió SYN.
No hay ese problema cuando me conecto al router desde otro dispositivo o visito otro sitio web desde MacOS.
¿Hay opciones/cabeceras especiales del paquete tcp de MacOS?
00:48:25.374383 IP mbp.lan.59304 > router.lan.http: Flags [S], seq 1796724219, win 65535, options [mss 1460,nop,wscale 6,nop,nop,TS val 1596083099 ecr 0,sackOK,eol], length 0
00:48:25.475394 IP mbp.lan.59304 > router.lan.http: Flags [S], seq 1796724219, win 65535, options [mss 1460,nop,wscale 6,nop,nop,TS val 1596083200 ecr 0,sackOK,eol], length 0
00:48:25.576576 IP mbp.lan.59304 > router.lan.http: Flags [S], seq 1796724219, win 65535, options [mss 1460,nop,wscale 6,nop,nop,TS val 1596083301 ecr 0,sackOK,eol], length 0
00:48:25.677740 IP mbp.lan.59304 > router.lan.http: Flags [S], seq 1796724219, win 65535, options [mss 1460,nop,wscale 6,nop,nop,TS val 1596083402 ecr 0,sackOK,eol], length 0
00:48:25.778906 IP mbp.lan.59304 > router.lan.http: Flags [S], seq 1796724219, win 65535, options [mss 1460,nop,wscale 6,nop,nop,TS val 1596083503 ecr 0,sackOK,eol], length 0
00:48:25.879255 IP mbp.lan.59304 > router.lan.http: Flags [S], seq 1796724219, win 65535, options [mss 1460,nop,wscale 6,nop,nop,TS val 1596083603 ecr 0,sackOK,eol], length 0
00:48:26.080421 IP mbp.lan.59304 > router.lan.http: Flags [S], seq 1796724219, win 65535, options [mss 1460,nop,wscale 6,nop,nop,TS val 1596083804 ecr 0,sackOK,eol], length 0
00:48:26.481605 IP mbp.lan.59304 > router.lan.http: Flags [S], seq 1796724219, win 65535, options [mss 1460,nop,wscale 6,nop,nop,TS val 1596084205 ecr 0,sackOK,eol], length 0
00:48:27.283921 IP mbp.lan.59304 > router.lan.http: Flags [S], seq 1796724219, win 65535, options [mss 1460,nop,wscale 6,nop,nop,TS val 1596085006 ecr 0,sackOK,eol], length 0
00:48:28.885169 IP mbp.lan.59304 > router.lan.http: Flags [S], seq 1796724219, win 65535, options [mss 1460,nop,wscale 6,nop,nop,TS val 1596086607 ecr 0,sackOK,eol], length 0
00:48:32.086355 IP mbp.lan.59304 > router.lan.http: Flags [S], seq 1796724219, win 65535, options [mss 1460,sackOK,eol], length 0
00:48:32.099170 IP router.lan.http > mbp.lan.59304: Flags [S.], seq 4020057176, ack 1796724220, win 14600, options [mss 1460,nop,nop,sackOK], length 0
00:48:32.099295 IP mbp.lan.59304 > router.lan.http: Flags [.], ack 1, win 65535, length 0
00:48:33.432798 IP mbp.lan.59304 > router.lan.http: Flags [P.], seq 1:2, ack 1, win 65535, length 1: HTTP
00:48:33.466137 IP router.lan.http > mbp.lan.59304: Flags [.], ack 2, win 14600, length 0
