--help Print help info and exit.

-4, -6 Explicitly  force  IPv4 or IPv6 tracerouting. By default, the program will try to resolve the name
       given, and choose the appropriate protocol automatically. If resolving a host  name  returns  both
       IPv4 and IPv6 addresses, traceroute will use IPv4.

-I     Use ICMP ECHO for probes

-T     Use TCP SYN for probes

-d     Enable socket level debugging (when the Linux kernel supports it)

-F     Do not fragment probe packets. (For IPv4 it also sets DF bit, which tells intermediate routers not
       to fragment remotely as well).

       Varying the size of the probing packet by the packet_len command line parameter, you can  manually
       obtain information about the MTU of individual network hops. The --mtu option (see below) tries to
       do this automatically.

       Note, that non-fragmented features (like -F or --mtu) work properly since the Linux kernel  2.6.22
       only.   Before  that  version,  IPv6 was always fragmented, IPv4 could use the once the discovered
       final mtu only (from the route cache), which can be less than the actual mtu of a device.

-f first_ttl
       Specifies with what TTL to start. Defaults to 1.

-g gateway
       Tells traceroute to add an IP source routing option to the outgoing packet that tells the  network
       to  route  the packet through the specified gateway (most routers have disabled source routing for
       security reasons).  In general, several gateway's is allowed (comma separated). For IPv6, the form
       of  num,addr,addr...   is  allowed, where num is a route header type (default is type 2). Note the
       type 0 route header is now deprecated (rfc5095).

-i interface
       Specifies the interface through which traceroute should send packets. By default, the interface is
       selected according to the routing table.

-m max_ttl
       Specifies  the  maximum number of hops (max time-to-live value) traceroute will probe. The default
       is 30.

-N squeries
       Specifies  the  number  of  probe  packets  sent  out  simultaneously.   Sending  several   probes
       concurrently can speed up traceroute considerably. The default value is 16.
       Note  that some routers and hosts can use ICMP rate throttling. In such a situation specifying too
       large number can lead to loss of some responses.

-n     Do not try to map IP addresses to host names when displaying them.

-p port
       For UDP tracing, specifies the destination port base traceroute will  use  (the  destination  port
       number will be incremented by each probe).
       For ICMP tracing, specifies the initial ICMP sequence value (incremented by each probe too).
       For  TCP  specifies  just the (constant) destination port to connect. When using the tcptraceroute
       wrapper, -p specifies the source port.

-t tos For IPv4, set the Type of Service (TOS) and Precedence value. Useful values are 16 (low delay) and
       8  (high  throughput).  Note that in order to use some TOS precedence values, you have to be super
       user.
       For IPv6, set the Traffic Control value.

-w waittime
       Set the time (in seconds) to wait for a response to a probe (default 5.0 sec).

-q nqueries
       Sets the number of probe packets per hop. The default is 3.

-r     Bypass the normal routing tables and send directly to a host on an attached network.  If the  host
       is  not  on  a directly-attached network, an error is returned.  This option can be used to ping a
       local host through an interface that has no route through it.

-s source_addr
       Chooses an alternative source address. Note that you  must  select  the  address  of  one  of  the
       interfaces.  By default, the address of the outgoing interface is used.

-z sendwait
       Minimal time interval between probes (default 0).  If the value is more than 10, then it specifies
       a number in milliseconds, else it is a number of seconds (float point values allowed too).  Useful
       when some routers use rate-limit for ICMP messages.

-e     Show  ICMP  extensions  (rfc4884). The general form is CLASS/TYPE: followed by a hexadecimal dump.
       The MPLS (rfc4950) is shown parsed, in a form:  MPLS:L=label,E=exp_use,S=stack_bottom,T=TTL  (more
       objects separated by / ).

-A     Perform  AS  path lookups in routing registries and print results directly after the corresponding
       addresses.

-V     Print the version and exit.

There is a couple of additional options, intended for an advanced usage (another trace methods etc.):

--sport=port
       Chooses the source port to use. Implies -N 1.  Normally source ports (if applicable) are chosen by
       the system.

--fwmark=mark
       Set the firewall mark for outgoing packets (since the Linux kernel 2.6.25).

-M method
       Use  specified  method for traceroute operations. Default traditional udp method has name default,
       icmp (-I) and tcp (-T) have names icmp and tcp respectively.
       Method-specific options can be passed by -O .  Most methods have their simple shortcuts, (-I means
       -M icmp, etc).

-O option
       Specifies  some  method-specific option. Several options are separated by comma (or use several -O
       on cmdline).  Each method may have its own specific options, or many not have  them  at  all.   To
       print information about available options, use -O help.

-U     Use  UDP  to particular destination port for tracerouting (instead of increasing the port per each
       probe). Default port is 53 (dns).

-UL    Use UDPLITE for tracerouting (default port is 53).

-P protocol
       Use raw packet of specified protocol for tracerouting. Default protocol is 253 (rfc3692).

--mtu  Discover MTU along the path being traced. Implies -F -N 1.  New mtu is printed once in a  form  of
       F=NUM at the first probe of a hop which requires such mtu to be reached. (Actually, the correspond
       "frag needed" icmp message normally is sent by the previous hop).