v3 breaks TCP route HostSNI having multiple entries

[resmo]

Welcome!

• Yes, I've searched similar issues on GitHub and didn't find any.
• Yes, I've searched similar issues on the Traefik community forum and didn't find any.

What did you do?

We configured TCP route based on HostSNI and in the past (in v2) for which we were able to pass several entries into HostSNI():

"Tags": [
"traefik.enable=true",
"traefik.tcp.routers.example-prod-website-https.entrypoints=websecure",
"traefik.tcp.routers.example-prod-website-https.rule=HostSNI(`example.com`,`www.example.com`)",
"traefik.tcp.routers.example-prod-website-https.service=example-prod-website-https",
"traefik.tcp.routers.example-prod-website-https.tls.passthrough=true"
],

This seems no longer possible, even with --core.defaultRuleSyntax=v2, but we haven't read anything about it the migration docs.

What did you see instead?

error while adding rule Host(`example.com`,`www.example.com`): error while adding rule Host: unexpected number of parameters; got 2, expected one of [1]

What version of Traefik are you using?

docker image traefik:v3.0.0

What is your environment & configuration?

core:
  defaultRuleSyntax: v2

providers:
  consulCatalog:
    refreshInterval: 5s
    prefix: traefik
    exposedByDefault: false
    endpoint:
      address: 127.0.0.1:8500
      scheme: http

entryPoints:
  web:
    address: ":80"
  websecure:
    address: ":443"
  traefik:
    address: ":8080"

If applicable, please paste the log output in DEBUG level

No response

[ldez]

Hello,

I recommend reading the migration guide: https://doc.traefik.io/traefik/migration/v2-to-v3/#router-rule-matchers

You should either enable v2 compatibility or split your rule HostSNI(`example.com`) || HostSNI(`www.example.com`)

[resmo]

thanks @ldez but even with

--core.defaultRuleSyntax=v2

or

core:
  defaultRuleSyntax: v2

We still get the same behaviour and error messages. I updated the main description accordingly.

[lbenguigui]

Hello @resmo ,

Thanks for reporting this issue, I opened a PR to fix it (#10680).

[traefiker]

Closed by #10680.