| ip.4 (6f5bc70a3ff25d174ded4288565c90e4488225c5) | ip.4 (538a4c1f75b386389807518b75f58c722eb6833d) |
|---|---|
| 1.\" Copyright (c) 1983, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 515 unchanged lines hidden (view full) --- 524the fields of the IP header, including the following: 525.Bd -literal 526ip->ip_v = IPVERSION; 527ip->ip_hl = hlen >> 2; 528ip->ip_id = 0; /* 0 means kernel set appropriate value */ 529ip->ip_off = offset; 530.Ed 531.Pp | 1.\" Copyright (c) 1983, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 515 unchanged lines hidden (view full) --- 524the fields of the IP header, including the following: 525.Bd -literal 526ip->ip_v = IPVERSION; 527ip->ip_hl = hlen >> 2; 528ip->ip_id = 0; /* 0 means kernel set appropriate value */ 529ip->ip_off = offset; 530.Ed 531.Pp |
| 532The ip_len and ip_off fields 533.Em must be provided in host byte order . | 532The 533.Va ip_len 534and 535.Va ip_off 536fields 537.Em must 538be provided in host byte order . |
| 534All other fields must be provided in network byte order. 535See 536.Xr byteorder 4 537for more information on network byte order. | 539All other fields must be provided in network byte order. 540See 541.Xr byteorder 4 542for more information on network byte order. |
| 538If the ip_id field is set to 0, then the kernel will choose an | 543If the 544.Va ip_id 545field is set to 0 then the kernel will choose an |
| 539appopriate value. 540If the header source address is set to 541.Dv INADDR_ANY , 542the kernel will choose an appropriate address. 543.Sh ERRORS 544A socket operation may fail with one of the following errors returned: 545.Bl -tag -width Er 546.It Bq Er EISCONN --- 30 unchanged lines hidden (view full) --- 577or longer than the option buffer provided. 578.El 579.Pp 580The following errors may occur when attempting to send 581.Tn IP 582datagrams via a 583.Dq raw socket 584with the | 546appopriate value. 547If the header source address is set to 548.Dv INADDR_ANY , 549the kernel will choose an appropriate address. 550.Sh ERRORS 551A socket operation may fail with one of the following errors returned: 552.Bl -tag -width Er 553.It Bq Er EISCONN --- 30 unchanged lines hidden (view full) --- 584or longer than the option buffer provided. 585.El 586.Pp 587The following errors may occur when attempting to send 588.Tn IP 589datagrams via a 590.Dq raw socket 591with the |
| 585.Em IP_HDRINCL | 592.Dv IP_HDRINCL |
| 586option set: 587.Bl -tag -width Er 588.It Bq Er EINVAL | 593option set: 594.Bl -tag -width Er 595.It Bq Er EINVAL |
| 589The user-supplied ip_len field was not equal to the length of the datagram 590written to the socket. | 596The user-supplied 597.Va ip_len 598field was not equal to the length of the datagram written to the socket. |
| 591.El 592.Sh SEE ALSO 593.Xr getsockopt 2 , 594.Xr recv 2 , 595.Xr send 2 , 596.Xr byteorder 4 , 597.Xr icmp 4 , 598.Xr inet 4 , 599.Xr intro 4 600.Sh HISTORY 601The 602.Nm 603protocol appeared in 604.Bx 4.2 . | 599.El 600.Sh SEE ALSO 601.Xr getsockopt 2 , 602.Xr recv 2 , 603.Xr send 2 , 604.Xr byteorder 4 , 605.Xr icmp 4 , 606.Xr inet 4 , 607.Xr intro 4 608.Sh HISTORY 609The 610.Nm 611protocol appeared in 612.Bx 4.2 . |