Understanding Linux Network Internals 
by Christian Benvenuti

This errata page lists errors corrected in the 2/07 printing.

Here's a key to the markup:
	[page-number]: serious technical mistake
	{page-number}: minor technical mistake
	<page-number>: important language/formatting problem
	(page-number): language change or minor formatting problem
	?page-number?: reader question or request for clarification



[39] code line above "Cloning and copying buffers"
skb_shinfo(skb)->dataref++;
should be
skb_shinfo(skb)->nr_frags++;


(42)   Code at bottom of page;
___function_name
should be
__function_name


[47]   unsigned char addr_len, line 3;
Ethernet addresses are 6 octets long. 
8 
should be: 
6


(98)  kmod bullet 1 line 4;
prorobe.conf should be modprobe.conf.


(150)  Split Operations: netdev_run_todo last line of first paragraph after head;
reference to Figure 8-4 should be 8-5(a)


(168)  Last line of first paragraph;
8-9 should be 8-8.


{195}  line 30 (including lines of code);
"(there are no softirqs pending, etc.)"
should be:
"(there are softirqs pending, etc.)"


{244}  1st paragraph;
.., output_queue is used by both NAPI and non-NAPI devices, and poll_list is used
only to handle NON-NAPI devices
should be
.., output_queue is used by both NAPI and non-NAPI devices, and poll_list is used 
only to handle NAPI devices


[250] 2nd bullet in middle of page;
"In this case, the function does not actually fail, but generates a warning with a call to BUG()"
should be
"In this case, the BUG macro is invoked, leading to a kernel panic"


(268)  5th(?) paragraph - near middle of the page;
In "...and Ethereal are common users of AF_SOCKET sockets.", AF_SOCKET should be
AF_PACKET


(284)  last paragraph (above 1st bullet);
"The two most significant bits of the first byte..." should read "The two least
significant bits of the first byte..."


(305)  3rd paragraph;
In the sentence "...from Bridge 1's perspective, Hosts A, B, C and D are all located
in LAN2,..." 
Bridge 1
should be:
Bridge 2


[451]  line 1 and 2;
'See the section "Local Delivery" in Chapter 20 
should be
...in Chapter 35