端口监听正常，局域网访问不了【着实费解！！】
问题遇到的现象和发生背景
安装odoo社区版版本，端口号8069
操作系统：Ubuntu Server 22.04
IP地址：192.168.1.120
python版本：Python 3.10.4
补充：端口22，就很正常，没有问题，怎么连接都可以！真是费解！！
运行结果及报错内容
局域网用浏览器打开访问 http://192.168.1.120:8069/ 访问不了，提示连接超时
我的解答思路和尝试过的方法
查看防火墙什么的【firewalld，iptables】，全部都未安装关闭了。
查看监听状态，正常
xiedaolin@nanjing:~$ sudo netstat -an | grep LISTEN
[sudo] password for xiedaolin:
tcp 0 0 127.0.0.1:5432 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:8069 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:10025 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:10028 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:7790 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:587 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.53:53 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:465 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN
tcp6 0 0 :::587 :::* LISTEN
tcp6 0 0 :::465 :::* LISTEN
tcp6 0 0 :::22 :::* LISTEN
tcp6 0 0 :::25 :::* LISTEN
由于无图形界面，在本机通过curl命令，返回正常，说明监听没有问题
root@nanjing:~# curl localhost:8069
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<title>Redirecting...</title>
<h1>Redirecting...</h1>
<p>You should be redirected automatically to target URL: <a href="/web">/web</a>. If not click the link.
使用tcpdump命令工具抓包，发现有请求i过来，但是长度为0
root@nanjing:~# tcpdump -i any port 8069
tcpdump: data link type LINUX_SLL2
tcpdump: verbose output suppressed, use -v[v]... for full protocol decode
listening on any, link-type LINUX_SLL2 (Linux cooked v2), snapshot length 262144 bytes
16:54:28.961236 enp3s0 In IP 192.168.1.122.52285 > nanjing.njbjc.com.8069: Flags [S], seq 4086347667, win 64240, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
16:54:28.961237 enp3s0 In IP 192.168.1.122.52286 > nanjing.njbjc.com.8069: Flags [S], seq 1367962423, win 64240, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
16:54:29.217091 enp3s0 In IP 192.168.1.122.52290 > nanjing.njbjc.com.8069: Flags [S], seq 1574040098, win 64240, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
16:54:29.965667 enp3s0 In IP 192.168.1.122.52285 > nanjing.njbjc.com.8069: Flags [S], seq 4086347667, win 64240, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
16:54:29.965667 enp3s0 In IP 192.168.1.122.52286 > nanjing.njbjc.com.8069: Flags [S], seq 1367962423, win 64240, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
16:54:30.220735 enp3s0 In IP 192.168.1.122.52290 > nanjing.njbjc.com.8069: Flags [S], seq 1574040098, win 64240, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
16:54:31.977727 enp3s0 In IP 192.168.1.122.52285 > nanjing.njbjc.com.8069: Flags [S], seq 4086347667, win 64240, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
16:54:31.977728 enp3s0 In IP 192.168.1.122.52286 > nanjing.njbjc.com.8069: Flags [S], seq 1367962423, win 64240, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
16:54:32.232731 enp3s0 In IP 192.168.1.122.52290 > nanjing.njbjc.com.8069: Flags [S], seq 1574040098, win 64240, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
16:54:35.984742 enp3s0 In IP 192.168.1.122.52285 > nanjing.njbjc.com.8069: Flags [S], seq 4086347667, win 64240, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
16:54:35.984743 enp3s0 In IP 192.168.1.122.52286 > nanjing.njbjc.com.8069: Flags [S], seq 1367962423, win 64240, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
16:54:36.240711 enp3s0 In IP 192.168.1.122.52290 > nanjing.njbjc.com.8069: Flags [S], seq 1574040098, win 64240, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
我想要达到的结果
局域网可以访问
看一下能不能ping通，或者在本机和远端telnet一下端口号
这种情况有一种可能性是入接口和回程接口不是同一接口，而网卡开启反向路由检测导致的不回包。检查一下路由，看入接口和回车路由是否是同一接口？
我抓了一下我这里的，tcp握手过程是len=0，而且没带-nn的话，回去反向查询ip成域名。你tcpdump -i any -nne tcp port 8069看看目的ip是否是192.168.1.120，是的话，就比较奇怪了，同网段的路由应该不会出错。
