---
name: "connect6"
section: "8"
platform: "linux"
package: "thc-ipv6"
version: "3.8-4"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/connect6"
---

# connect6(8)

## NAME

**connect6**

## SYNOPSIS

connect6 \[-a \| -A type\] \[-i\] target-ip target-port

## OPTIONS

```
  -a       send Hop-by-Hop Router Alert option
  -A type  like -a but lets you define the alarmtype (number)
  -i       interactive mode (like telnet)
  -I       end a linefeed, wait for a string, print it
  -O       try TCP Fast Open connection
  -w ms    wait time for connect in ms (default: 1000)
  -p       ping mode
You can supply a %interface identifier to the target-ip
Returns 0 on successful connect, 1 on timeout/reset
```

## AUTHOR

thc-ipv6 was written by van Hauser \<vh@thc.org\> / THC

The homepage for this toolkit is: https://github.com/vanhauser-thc/thc-ipv6

## COPYRIGHT

connect6 3.8 (c) 2020 by van Hauser / THC \<vh@thc.org\> www.github.com/vanhauser-thc/thc-ipv6