Unable to connect to HTTP urls in WSL2; but HTTPS works

[shadab16]

Environment

Microsoft Windows [Version 10.0.18363.1049]
Release:        20.04
Linux version 4.19.128-microsoft-standard (oe-user@oe-host) (gcc version 8.2.0 (GCC)) #1 SMP Tue Jun 23 12:58:10 UTC 2020

Steps to reproduce

Accessing any HTTP url from WSL2 doesn't work and gets timed out.

$ curl -I -4 http://www.microsoft.com

Strace output:

https://gist.github.com/shadab16/7d740d5c1fb970bd7880669eef953a1e

$ strace -ff -o strace-output.txt curl -I -4 http://www.microsoft.com
...
socket(AF_INET, SOCK_STREAM, IPPROTO_TCP) = 5
setsockopt(5, SOL_TCP, TCP_NODELAY, [1], 4) = 0
setsockopt(5, SOL_SOCKET, SO_KEEPALIVE, [1], 4) = 0
setsockopt(5, SOL_TCP, TCP_KEEPIDLE, [60], 4) = 0
setsockopt(5, SOL_TCP, TCP_KEEPINTVL, [60], 4) = 0
fcntl(5, F_GETFL)                       = 0x2 (flags O_RDWR)
fcntl(5, F_SETFL, O_RDWR|O_NONBLOCK)    = 0
connect(5, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("23.201.221.228")}, 16) = -1 EINPROGRESS (Operation now in progress)
poll([{fd=5, events=POLLOUT|POLLWRNORM}], 1, 0) = 0 (Timeout)
rt_sigaction(SIGPIPE, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7f72499fd3c0}, NULL, 8) = 0
poll([{fd=5, events=POLLOUT}, {fd=3, events=POLLIN}], 2, 10) = 0 (Timeout)
...

DNS lookup:

;; QUESTION SECTION:
;www.microsoft.com.             IN      A

;; ANSWER SECTION:
www.microsoft.com.      0       IN      CNAME   www.microsoft.com-c-3.edgekey.net.
www.microsoft.com-c-3.edgekey.net. 0 IN CNAME   www.microsoft.com-c-3.edgekey.net.globalredir.akadns.net.
www.microsoft.com-c-3.edgekey.net.globalredir.akadns.net. 0 IN CNAME e13678.dspb.akamaiedge.net.
e13678.dspb.akamaiedge.net. 0   IN      A       23.201.221.228

;; Query time: 10 msec
;; SERVER: 192.168.187.113#53(192.168.187.113)
;; WHEN: Thu Oct 29 06:07:57 IST 2020
;; MSG SIZE  rcvd: 340

WSL logs:
https://aka.ms/AAa3t7r

Expected behavior

The expected output is on the left. Both http and https calls are successful when running cURL in Windows (Command Prompt), non-elevated.

Actual behavior

The problematic output is on the right. Only https calls succeed; and the http calls fail. This is observed across multiple end-points (microsoft.com, yahoo.com, google.com, netflix.com, ubuntu.com).

[microsoft-github-policy-service]

This issue has been automatically closed since it has not had any activity for the past year. If you're still experiencing this issue please re-file this as a new issue or feature request.

Thank you!