On 2/16/23 2:23 AM, Stefano Brivio wrote:
...
  Based on a patch from Laine, and reports from Laine
and Yalan: fix
 the "22-80:32-90" example, and improve wording for the other ones:
 instead of using "to" to denote the end of a range, use "between ...
 and", so that it's clear we're *not* referring to target ports.
 
 Reported-by: Laine Stump <laine(a)redhat.com>
 Reported-by: Yalan Zhang <yalzhang(a)redhat.com>
 Fixes: da20f57f19dc ("passt, qrap: Add man pages")
 Signed-off-by: Stefano Brivio <sbrivio(a)redhat.com> 
Reviewed-by: Laine Stump <laine(a)redhat.com>

(if I'm allowed :-)

...
  ---
 v2: Adopted further changes proposed by David
 
   passt.1 | 29 +++++++++++++++++------------
   1 file changed, 17 insertions(+), 12 deletions(-)
 
 diff --git a/passt.1 b/passt.1
 index 528763b..f317c33 100644
 --- a/passt.1
 +++ b/passt.1
 @@ -338,7 +338,7 @@ Examples:
   .RS
   .TP
   -t 22
 -Forward local port 22 to 22 on the guest
 +Forward local port 22 to port 22 on the guest
   .TP
   -t 22:23
   Forward local port 22 to port 23 on the guest
 @@ -347,10 +347,10 @@ Forward local port 22 to port 23 on the guest
   Forward local ports 22 and 25 to ports 22 and 25 on the guest
   .TP
   -t 22-80
 -Forward local ports 22 to 80 to corresponding ports on the guest
 +Forward local ports between 22 and 80 to corresponding ports on the guest
   .TP
 --t 22-80-32:90
 -Forward local ports 22 to 80 to corresponding ports on the guest plus 10
 +-t 22-80:32-90
 +Forward local ports between 22 and 80 to ports between 32 and 90 on the guest
   .TP
   -t 192.0.2.1/22
   Forward local port 22, bound to 192.0.2.1, to port 22 on the guest
 @@ -359,10 +359,12 @@ Forward local port 22, bound to 192.0.2.1, to port 22 on the guest
   Forward local port 22, bound to 192.0.2.1 and interface eth0, to port 22
   .TP
   -t 2000-5000,~3000-3010
 -Forward local ports 2000 to 5000, but not 3000 to 3010
 +Forward local ports between 2000 and 5000, except for those between 3000 and
 +3010
   .TP
   -t 192.0.2.1/20-30,~25
 -Forward local ports 20 to 24, and 26 to 30, bound to 192.0.2.1
 +For the local address 192.0.2.1, forward ports between 20 and 24 and between 26
 +and 30
   .TP
   -t ~20000-20010
   Forward all ports to the guest, except for the range from 20000 to 20010
 @@ -425,10 +427,11 @@ Forward local port 22 to port 23 in the target namespace
   Forward local ports 22 and 25 to ports 22 and 25 in the target namespace
   .TP
   -t 22-80
 -Forward local ports 22 to 80 to corresponding ports in the target namespace
 +Forward local ports between 22 and 80 to corresponding ports in the target
 +namespace
   .TP
 --t 22-80-32:90
 -Forward local ports 22 to 80 to corresponding ports plus 10 in the target
 +-t 22-80:32-90
 +Forward local ports between 22 and 80 to ports between 32 and 90 in the target
   namespace
   .TP
   -t 192.0.2.1/22
 @@ -438,13 +441,15 @@ Forward local port 22, bound to 192.0.2.1, to port 22 in the target
namespace
   Forward local port 22, bound to 192.0.2.1 and interface eth0, to port 22
   .TP
   -t 2000-5000,~3000-3010
 -Forward local ports 2000 to 5000, but not 3000 to 3010
 +Forward local ports between 2000 and 5000, except for those between 3000 and
 +3010
   .TP
   -t 192.0.2.1/20-30,~25
 -Forward local ports 20 to 24, and 26 to 30, bound to 192.0.2.1
 +For the local address 192.0.2.1, forward ports between 20 and 24 and between 26
 +and 30
   .TP
   -t ~20000-20010
 -Forward all ports to the namespace, except for the range from 20000 to 20010
 +Forward all ports to the namespace, except for those between 20000 and 20010
   .RE
   
   IPv6 bound ports are also forwarded for IPv4.