Attempt to document the recent in_pcb local port address changes..

KekenoBSD/src

This commit is contained in:

Peter Wemm

1996-02-23 21:01:35 +00:00

parent a2ebc3ee0f

commit 7ee32b9fba

1 changed files with 34 additions and 0 deletions

+34

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@@ -131,6 +131,40 @@ cmsg_len = sizeof(struct in_addr)
 cmsg_level = IPPROTO_IP
 cmsg_type = IP_RECVDSTADDR
 .Ed
 .Pp
 .Dv IP_PORTRANGE
 may be used to set the port range used for selecting a local port number
 on a socket with an unspecified (zero) port number. It has the following
 possible values:
 .Bl -tag -width IP_PORTRANGE_DEFAULT
 .It Dv IP_PORTRANGE_DEFAULT
 use the default range of values, normally
 .Dv IPPORT_RESERVED
 through
 .Dv IPPORT_RESERVED .
 This is adjustable through the sysctl setting:
 .Nm net.inet.ip.portrange.first
 and
 .Nm net.inet.ip.portrange.last .
 .It Dv IP_PORTRANGE_HIGH
 use a high range of values, normally
 .Dv IPPORT_HIFIRSTAUTO
 and
 .Dv IPPORT_HILASTAUTO .
 This is adjustable through the sysctl setting:
 .Nm net.inet.ip.portrange.hifirst
 and
 .Nm net.inet.ip.portrange.hilast .
 .It Dv IP_PORTRANGE_LOW
 use a low range of ports, which are normally restricted to
 privileged processes on
 .Ux
 systems.  The range is normally from
 .Dv IPPORT_RESERVED
 down to
 .Li 1
 in descending order.  This range is not sysctl configurable.
 .El
 .Ss "Multicast Options"
 .Pp
 .Tn IP