I have a server on which I want to deploy a container that needs access to the internet, but right now this only works for some urls and not for others.

In a container (behaviour is the same for all tested images but I am using docker run -it jonabelle/docker-network-tools) I am able to curl https://google.com and https://youtube.com while I’m getting timeouts for https://gitlab.com, https://wikipedia.com, and https://github.com.
From the host I am able to curl all the urls successfully, it’s just in the containers that I get timeouts.

In the container:

• nslookup works for the urls that are getting timeouts, so it’s not a DNS issue.
• traceroute -I github.com also eventually arives at the ip that I got with host github.com.
• telnet github.com 443 and telnet github.com 80 connect successfully.
• but still curl https://github.com hangs indefinitely

The output of curl -v https://github.com hangs during TLS:

* Host github.com:443 was resolved.
* IPv6: (none)
* IPv4: 140.82.121.3
*   Trying 140.82.121.3:443...
* Connected to github.com (140.82.121.3) port 443
* ALPN: curl offers h2,http/1.1
* TLSv1.3 (OUT), TLS handshake, Client hello (1):
*  CAfile: /etc/ssl/certs/ca-certificates.crt
*  CApath: /etc/ssl/certs

I have replicated the same steps on my laptop, where it works, and compared the networking config with docker inspect $CONTAINER and docker inspect bridge(which is the network both containers are in) where, except for the network and container ids, everything it the same.

I am at my wits end here, connecting to github works on the server and in a container with the same network configuration on my laptop, but when running a container on the server, TLS times out.
What I find especially weird, is that some urls work perfectly fine.
How do I go about troubleshooting this?

For completion sake here is the network config on the server(except for the IDs they are the same on my laptop)
docker network inspect bridge:

[
    {
        "Name": "bridge",
        "Id": "420676ee8b7fcf5ea96a269cc32af5716ffeaefebbf158a549a8a2ce9dda9696",
        "Created": "2024-04-16T17:38:54.080001438+02:00",
        "Scope": "local",
        "Driver": "bridge",
        "EnableIPv6": false,
        "IPAM": {
            "Driver": "default",
            "Options": null,
            "Config": [
                {
                    "Subnet": "172.17.0.0/16",
                    "Gateway": "172.17.0.1"
                }
            ]
        },
        "Internal": false,
        "Attachable": false,
        "Ingress": false,
        "ConfigFrom": {
            "Network": ""
        },
        "ConfigOnly": false,
        "Containers": {},
        "Options": {
            "com.docker.network.bridge.default_bridge": "true",
            "com.docker.network.bridge.enable_icc": "true",
            "com.docker.network.bridge.enable_ip_masquerade": "true",
            "com.docker.network.bridge.host_binding_ipv4": "0.0.0.0",
            "com.docker.network.bridge.name": "docker0",
            "com.docker.network.driver.mtu": "1500"
        },
        "Labels": {}
    }
]

and docker inspect <container-name>

...
"NetworkSettings": {
            "Bridge": "",
            "SandboxID": "659eaf6d3fee5727df05046e656bfc2e871a1e66d55f7af6dd800565f0fe5bd8",
            "SandboxKey": "/var/run/docker/netns/659eaf6d3fee",
            "Ports": {},
            "HairpinMode": false,
            "LinkLocalIPv6Address": "",
            "LinkLocalIPv6PrefixLen": 0,
            "SecondaryIPAddresses": null,
            "SecondaryIPv6Addresses": null,
            "EndpointID": "",
            "Gateway": "",
            "GlobalIPv6Address": "",
            "GlobalIPv6PrefixLen": 0,
            "IPAddress": "",
            "IPPrefixLen": 0,
            "IPv6Gateway": "",
            "MacAddress": "",
            "Networks": {
                "bridge": {
                    "IPAMConfig": null,
                    "Links": null,
                    "Aliases": null,
                    "MacAddress": "",
                    "NetworkID": "420676ee8b7fcf5ea96a269cc32af5716ffeaefebbf158a549a8a2ce9dda9696",
                    "EndpointID": "",
                    "Gateway": "",
                    "IPAddress": "",
                    "IPPrefixLen": 0,
                    "IPv6Gateway": "",
                    "GlobalIPv6Address": "",
                    "GlobalIPv6PrefixLen": 0,
                    "DriverOpts": null,
                    "DNSNames": null
                }
            }
        }