iftop-users June 2018

iftop-users@domain

4 participants
8 discussions

[Iftop-users] Looking to cancel your subscription?
by Team at TruBrain 15 Jun '18

15 Jun '18

Hi Iftop-users, TruBrain Brainiac Bot at your service! Sounds like you’re looking to cancel your subscription! You can do that easily by registering and signing into your account portal. Click “Cancel” on whichever subscription(s) you’d like to stop. Choose a reason why (and try out our bars or capsules if taste was an issue!) Then return to your account page to see the updated information. If you’re having issues, you can also fill out our cancellation form, and we can do it manually for you. If you’re looking for a refund for one of your purchases, please respond to this email with “Refund Request”, and a representative will get back to you ASAP to help you with your request. We hate to see you leave! Thank you for trying out TruBrain and being a valuable customer. Cheers, The TruBrain Team (Not what you were asking for?? Just reply “Not quite!” to this email and we’ll get you taken care of ASAP! I am just a bot after all!)

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[Iftop-users] Ticket Received - iftop-users Digest, Vol 5, Issue 3
by Team at TruBrain 14 Jun '18

14 Jun '18

Dear Iftop-users, Thank you for messaging us here at TruBrain! We would like to acknowledge that we have received your request and a ticket has been created. We try to be responsive and will get back to you as soon as we can! Thank you for your patience. Have a great day, TruBrain Support Team

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[Iftop-users] v4tunnels cannot be listened to
by Shawn Landden 14 Jun '18

14 Jun '18

such as those made with Hurricane Electric for ipv6 connectivity to reproduce: my /etc/network/interfaces iface he-ipv6 inet6 v4tunnel address 2001:470:c:238::2 netmask 64 #LA 0.5ms endpoint 66.220.18.42 local 198.46.198.198 ttl 255 gateway 2001:470:c:238::1 up ip addr add 2001:470:d:238::1 dev he-ipv6 iftop -i he-ipv6 (nothing shows) reported to debian here https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=901283 it works with tcpdump/libpcap

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[Iftop-users] Looking to cancel your subscription?
by Team at TruBrain 12 Jun '18

12 Jun '18

2 1

[Iftop-users] Ticket Received - iftop-users Digest, Vol 5, Issue 2
by Team at TruBrain 11 Jun '18

11 Jun '18

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[Iftop-users] [PATCH] options: select interface that is IPv4 default route (Closes: #644998)
by Shawn Landden 11 Jun '18

11 Jun '18

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=644998 --- options.c | 77 ++++++++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 76 insertions(+), 1 deletion(-) diff --git a/options.c b/options.c index a075357..efff2c7 100644 --- a/options.c +++ b/options.c @@ -6,8 +6,13 @@ #include "config.h" +#ifdef __linux__ +#define _GNU_SOURCE +#endif + #include <sys/types.h> +#include <fcntl.h> #include <stdio.h> #include <string.h> #include <stdlib.h> @@ -90,6 +95,72 @@ static int is_bad_interface_name(char *i) { return 0; } +/* none of these errors are expected, so I think it is OK to print them */ +static char *get_interface_for_default_ipv4_route(void) { +#ifdef __linux__ + pid_t pid; + int fds[2]; + int r; + char buf[4096]; + char *p, *q; + + r = pipe2(fds, O_CLOEXEC); + if (r < 0) { + fprintf(stderr, "get_interface_for_default_ipv4_route: pipe() failed: %s, continuing...", strerror(r)); + return NULL; + } + pid = fork(); + if (pid < 0) { + fprintf(stderr, "get_interface_for_default_ipv4_route: fork() failed: %s, continuing...", strerror(r)); + return NULL; + } else if (pid == 0) { + /* child */ + r = dup2(fds[0], STDOUT_FILENO); + if (r < 0) { + char buf[1] = {'\n'}; + + /* we have to write something as the other end is expecting something */ + r = write(fds[0], &buf, sizeof(buf)); + _exit(EXIT_FAILURE); + } + + execlp("ip", /* add "-6", here to make default IPv6 route */ "route", NULL); + char buf[1] = {'\n'}; + + /* we have to write something as the other end is expecting something */ + r = write(fds[0], &buf, sizeof(buf)); + _exit(EXIT_FAILURE); + } + /* parent */ + close(fds[1]); + r = read(fds[1], &buf, sizeof(buf)); + if (r < 0) { + fprintf(stderr, "get_interface_for_default_ipv4_route: read() failed: %s, continuing...", strerror(r)); + return NULL; + } + + p = strstr((char *)&buf, "default via "); + if (!p) + return NULL; + p += strlen("default via "); + q = p; + for (;*p != '\n' && *p; p++) + ; + *p = '\0'; + p = strstr(q, " dev "); + if (!p) + return NULL; + p += strlen(" dev "); + q = p; + for (;*p != ' ' && *p; p++) + ; + *p = '\0'; + return xstrdup(q); +#else + return NULL; +#endif +} + /* This finds the first interface which is up and is not the loopback * interface or one of the interface types listed in bad_interface_names. */ static char *get_first_interface(void) { @@ -123,9 +194,13 @@ static char *get_first_interface(void) { void options_set_defaults() { char *s; + + if (!options.interface) + options.interface = get_interface_for_default_ipv4_route(); /* Should go through the list of interfaces, and find the first one which * is up and is not lo or dummy*. */ - options.interface = get_first_interface(); + if (!options.interface) + options.interface = get_first_interface(); if (!options.interface) options.interface = "eth0"; -- 2.17.1

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[Iftop-users] Ticket Received - iftop-users Digest, Vol 5, Issue 1
by Team at TruBrain 11 Jun '18

11 Jun '18

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[Iftop-users] Looking to cancel your subscription?
by Team at TruBrain 11 Jun '18

11 Jun '18

1 0

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iftop-users June 2018