05-16-2011
You realize that any system call can cause this context switch? That a system call is in fact a context switch? Running a system call stops the process until the system call finishes! What you're looking for doesn't exist.
Running strace on ifconfig in linux, I see it using ioctl with SIOCSIFADDR, SIOCGIFFLAGS, and SIOCSIFNETMASK.
10 More Discussions You Might Find Interesting
1. Programming
:(
Hi
I am trying to get Mac address of of my Sun server from my C program running on the host machine.
Any suggestions . (1 Reply)
Discussion started by: ss_hpov
1 Replies
2. UNIX for Dummies Questions & Answers
Hi
Can some one help me How do find out Mac address in Tru64 Unix
Thank you (1 Reply)
Discussion started by: Syed_45
1 Replies
3. IP Networking
Hi sir,
i want to make such programe which takes MAC(Ethernet) address of any host & give me its IP address.......
but i'm nt getting that how i can pass the MAC address to Frame........
Please give me an idea for making such program...
Thanks & regards
Krishna (3 Replies)
Discussion started by: krishnacins
3 Replies
4. Solaris
Hi,
I've got a Sun Solaris machine with host ID (840f8e57) and MAC address (0:14:4f:f:8e:57), how do I:
1. Write the MAC address in standard (IEEE 802) format, i.e. xx-xx-xx-xx-xx-xx? Do I need to add 0's before or after the 'f', i.e. 00-14-4f-0f-8e-57 or 00-14-4f-f0-8e-57?
2. What is... (4 Replies)
Discussion started by: TheBlueSky
4 Replies
5. Solaris
I have following message in my messages file on solaris 10
WARNING: e1000g3712000:3 has duplicate address 010.022.196.011 (in use by 00:50:56:85:25:ef); disabled
Now is there any way i can find which server has 00:50:56:85:25:ef mac address either IP or Hostname ? (6 Replies)
Discussion started by: fugitive
6 Replies
6. Cybersecurity
There is a question in the SCO section asking for information on how to change the MAC address of a NIC. Is there a valid reason for wanting to change the MAC address? (1 Reply)
Discussion started by: jgt
1 Replies
7. SCO
hi every one please help
i want to change mac address in sco unix 5.0.6
how can i do this (3 Replies)
Discussion started by: kaydream
3 Replies
8. IP Networking
Hi there
I lost connectivity to one of our remote systems and when I checked the messages log I found the following:
Aug 10 23:42:34 host xntpd: time reset (step) 1.681729 s
Aug 16 13:20:51 host ip: WARNING: node "mac address" is using our IP address x.x.x.x on aggr1
Aug 16 13:20:51 host... (9 Replies)
Discussion started by: notreallyhere
9 Replies
9. IP Networking
ubuntu / xubuntu 13.10 and 14.04 (this issue should exist in debian as well)
I use wifi to connect to internet. I would like to change the wifi card mac address before connecting. Let's call the original mac address, macA, and the new mac address, macB.
I do the following:
ifconfig wlan0... (2 Replies)
Discussion started by: arpagon
2 Replies
10. IP Networking
four interfaces with ifconfig
all interfaces have the same mac. If is not set for unique.
but it still works.
what difference does it make to have all macs the same or different? (4 Replies)
Discussion started by: rrodgers
4 Replies
LEARN ABOUT DEBIAN
shorewall-maclist
SHOREWALL-MACLIST(5) [FIXME: manual] SHOREWALL-MACLIST(5)
NAME
maclist - Shorewall MAC Verification file
SYNOPSIS
/etc/shorewall/maclist
DESCRIPTION
This file is used to define the MAC addresses and optionally their associated IP addresses to be allowed to use the specified interface.
The feature is enabled by using the maclist option in the shorewall-interfaces[1](5) or shorewall-hosts[2](5) configuration file.
The columns in the file are as follows (where the column name is followed by a different name in parentheses, the different name is used in
the alternate specification syntax).
DISPOSITION - {ACCEPT|DROP|REJECT}[:log-level]
ACCEPT or DROP (if MACLIST_TABLE=filter in shorewall.conf[3](5), then REJECT is also allowed). If specified, the log-level causes
packets matching the rule to be logged at that level.
INTERFACE - interface
Network interface to a host.
MAC - address
MAC address of the host -- you do not need to use the Shorewall format for MAC addresses here. If IP ADDRESSESES is supplied then MAC
can be supplied as a dash (-)
IP ADDRESSES (addresses) - [address[,address]...]
Optional - if specified, both the MAC and IP address must match. This column can contain a comma-separated list of host and/or subnet
addresses. If your kernel and iptables have iprange match support then IP address ranges are also allowed. Similarly, if your kernel
and iptables include ipset support than set names (prefixed by "+") are also allowed.
FILES
/etc/shorewall/maclist
SEE ALSO
http://shorewall.net/MAC_Validation.html
http://shorewall.net/configuration_file_basics.htm#Pairs
shorewall(8), shorewall-accounting(5), shorewall-actions(5), shorewall-blacklist(5), shorewall-hosts(5), shorewall_interfaces(5),
shorewall-ipsets(5), shorewall-masq(5), shorewall-nat(5), shorewall-netmap(5), shorewall-params(5), shorewall-policy(5),
shorewall-providers(5), shorewall-proxyarp(5), shorewall-rtrules(5), shorewall-routestopped(5), shorewall-rules(5), shorewall.conf(5),
shorewall-secmarks(5), shorewall-tcclasses(5), shorewall-tcdevices(5), shorewall-tcrules(5), shorewall-tos(5), shorewall-tunnels(5),
shorewall-zones(5)
NOTES
1. shorewall-interfaces
http://www.shorewall.net/manpages/shorewall-interfaces.html
2. shorewall-hosts
http://www.shorewall.net/manpages/shorewall-hosts.html
3. shorewall.conf
http://www.shorewall.net/manpages/shorewall.conf.html
[FIXME: source] 06/28/2012 SHOREWALL-MACLIST(5)