J'ai banché mon telephone en mode partage de connexion sur Untangle, ma connexion fixe est sur eth0 et le mobile sur eth6. Les commandes sont lancés directement depuis Untangle.
curl --interface eth0 -v https://www.parionssport.fdj.fr
*   Trying 194.4.208.38...
* TCP_NODELAY set
* Local Interface eth0 is ip 85.x.x.x using address family 2
* Local port: 0
* Expire in 200 ms for 4 (transfer 0x562c27b0cf90)
* Connected to www.parionssport.fdj.fr (194.4.208.38) port 443 (#0)
* ALPN, offering h2
* ALPN, offering http/1.1
* successfully set certificate verify locations:
*   CAfile: none
  CApath: /etc/ssl/certs
* TLSv1.3 (OUT), TLS handshake, Client hello (1):
* TLSv1.3 (IN), TLS handshake, Server hello (2):
* TLSv1.2 (IN), TLS handshake, Certificate (11):
* TLSv1.2 (IN), TLS handshake, Server key exchange (12):
* TLSv1.2 (IN), TLS handshake, Server finished (14):
* TLSv1.2 (OUT), TLS handshake, Client key exchange (16):
* TLSv1.2 (OUT), TLS change cipher, Change cipher spec (1):
* TLSv1.2 (OUT), TLS handshake, Finished (20):
* TLSv1.2 (IN), TLS handshake, Finished (20):
* SSL connection using TLSv1.2 / ECDHE-RSA-AES256-GCM-SHA384
* ALPN, server did not agree to a protocol
* Server certificate:
*  subject: businessCategory=Private Organization; jurisdictionC=FR; jurisdictionST=�le-de-France; jurisdictionL=Nanterre; serialNumber=315 065 292; C=FR; L=Boulogne Billancourt; O=La Francaise Des Jeux S.A.; CN=www.parionssport.fdj.fr
*  start date: Feb  9 00:00:00 2021 GMT
*  expire date: Mar 12 23:59:59 2022 GMT
*  subjectAltName: host "www.parionssport.fdj.fr" matched cert's "www.parionssport.fdj.fr"
*  issuer: C=US; O=DigiCert Inc; OU=www.digicert.com; CN=DigiCert SHA2 Extended Validation Server CA
*  SSL certificate verify ok.
> GET / HTTP/1.1
> Host: www.parionssport.fdj.fr
> User-Agent: curl/7.64.0
> Accept: */*
> 
* OpenSSL SSL_read: SSL_ERROR_SYSCALL, errno 104
* Closing connection 0
curl: (56) OpenSSL SSL_read: SSL_ERROR_SYSCALL, errno 104
curl --interface eth6 -v https://www.parionssport.fdj.fr
*   Trying 194.4.208.38...
* TCP_NODELAY set
* Local Interface eth6 is ip 192.168.42.107 using address family 2
* Local port: 0
* Expire in 200 ms for 4 (transfer 0x5619f9f79f90)
* Connected to www.parionssport.fdj.fr (194.4.208.38) port 443 (#0)
* ALPN, offering h2
* ALPN, offering http/1.1
* successfully set certificate verify locations:
*   CAfile: none
  CApath: /etc/ssl/certs
* TLSv1.3 (OUT), TLS handshake, Client hello (1):
* TLSv1.3 (IN), TLS handshake, Server hello (2):
* TLSv1.2 (IN), TLS handshake, Certificate (11):
* TLSv1.2 (IN), TLS handshake, Server key exchange (12):
* TLSv1.2 (IN), TLS handshake, Server finished (14):
* TLSv1.2 (OUT), TLS handshake, Client key exchange (16):
* TLSv1.2 (OUT), TLS change cipher, Change cipher spec (1):
* TLSv1.2 (OUT), TLS handshake, Finished (20):
* TLSv1.2 (IN), TLS handshake, Finished (20):
* SSL connection using TLSv1.2 / ECDHE-RSA-AES256-GCM-SHA384
* ALPN, server did not agree to a protocol
* Server certificate:
*  subject: businessCategory=Private Organization; jurisdictionC=FR; jurisdictionST=�le-de-France; jurisdictionL=Nanterre; serialNumber=315 065 292; C=FR; L=Boulogne Billancourt; O=La Francaise Des Jeux S.A.; CN=www.parionssport.fdj.fr
*  start date: Feb  9 00:00:00 2021 GMT
*  expire date: Mar 12 23:59:59 2022 GMT
*  subjectAltName: host "www.parionssport.fdj.fr" matched cert's "www.parionssport.fdj.fr"
*  issuer: C=US; O=DigiCert Inc; OU=www.digicert.com; CN=DigiCert SHA2 Extended Validation Server CA
*  SSL certificate verify ok.
> GET / HTTP/1.1
> Host: www.parionssport.fdj.fr
> User-Agent: curl/7.64.0
> Accept: */*
> 
< HTTP/1.1 200 OK
< Date: Sun, 11 Apr 2021 22:17:53 GMT
< Content-Type: text/html; charset=utf-8
< Last-Modified: Fri, 23 Oct 2020 11:12:02 GMT
< ETag: "5f92ba82-59a2"
< X-Frame-Options: SAMEORIGIN
< X-Content-Type-Options: nosniff
< X-XSS-Protection: 1; mode=block
< Cache-Control: max-age=1800,public
< Accept-Ranges: bytes
< Content-Length: 22946
< Connection: Keep-alive
< Keep-Alive: timeout=15, max=100
< Age: 1067
traceroute --interface=eth0 www.parionssport.fdj.fr
traceroute to www.parionssport.fdj.fr (194.4.208.38), 30 hops max, 60 byte packets
 1  10.36.128.1 (10.36.128.1)  5.553 ms  5.423 ms  5.335 ms
 2  crp1rj-ge-0-1-5.100.numericable.net (213.245.253.225)  9.747 ms  9.604 ms  9.503 ms
 3  53.106.223.213.rev.sfr.net (213.223.106.53)  10.686 ms  10.660 ms 57.106.223.213.rev.sfr.net (213.223.106.57)  11.685 ms
 4  129.10.136.77.rev.sfr.net (77.136.10.129)  17.050 ms  17.371 ms  16.075 ms
 5  129.10.136.77.rev.sfr.net (77.136.10.129)  15.293 ms  16.246 ms  16.005 ms
 6  46.218.128.73 (46.218.128.73)  16.282 ms  15.563 ms  15.539 ms
 7  92.103.246.106 (92.103.246.106)  25.260 ms  28.026 ms  26.458 ms
 8  92.103.246.106 (92.103.246.106)  27.860 ms  25.600 ms  24.293 ms
 9  * * *
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traceroute --interface=eth6 www.parionssport.fdj.fr
traceroute to www.parionssport.fdj.fr (194.4.208.38), 30 hops max, 60 byte packets
 1  192.168.42.129 (192.168.42.129)  1.928 ms  2.025 ms  2.086 ms
 2  255.0.0.0 (255.0.0.0)  30.552 ms  30.576 ms  31.551 ms
 3  * * *
 4  255.0.0.1 (255.0.0.1)  32.363 ms  32.417 ms  32.388 ms
 5  255.0.0.2 (255.0.0.2)  31.254 ms  31.281 ms  31.171 ms
 6  10.125.122.50 (10.125.122.50)  32.149 ms  31.055 ms  30.845 ms
 7  89.89.100.208 (89.89.100.208)  28.958 ms  33.123 ms  32.917 ms
 8  be28.cbr01-ntr.net.bbox.fr (212.194.171.70)  38.631 ms  37.529 ms  38.523 ms
 9  62.34.2.112 (62.34.2.112)  35.169 ms  36.065 ms  34.895 ms
10  * * *
11  ae50-0.nridf302.rbci.orange.net (193.252.99.105)  35.438 ms  35.289 ms  22.741 ms
12  ae41-0.nrmar102.rbci.orange.net (193.252.161.10)  32.463 ms  39.440 ms  39.403 ms
13  ae42-0.ncmar102.rbci.orange.net (193.252.101.121)  46.920 ms  45.959 ms  46.868 ms
14  193.249.213.126 (193.249.213.126)  45.001 ms  43.909 ms  43.813 ms
15  81.253.183.22 (81.253.183.22)  42.278 ms  56.425 ms  47.674 ms
16  * * *
17  * * *
18  81.55.99.238 (81.55.99.238)  31.477 ms  36.868 ms  44.098 ms
19  90.85.175.81 (90.85.175.81)  44.026 ms  44.517 ms  106.149 ms
20  * * *
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J'ai pas l'impression que le probleme soit chez moi.
Edit: j'ai la mémoire courte, j'ai déjà rencontré ce problème en 2018, sujet:"Access a eclipse.org impossible sur certaines conditions", et a l'époque j'utilisais pas untangle ni pi-hole