1.Можно пример дампа такого ip пакета , и ссылочку на соответствующее rfc?
Собственно если речь идёт про MPEG2
то вот rfc, там я не нашёл ничего по поводу отсутствия или очистки MAC адреса.:
https://tools.ietf.org/html/rfc4947#page-21Есть ли какието предположения как ARP или SARP будет работать без MAC ?
Или как будет проходить AR без ARP или SARP?
2.Какбы я никуда и не прошусь мне до фонаря. Слишком я стар для геморроя.
2Кузьмич
Можешь верить а можешь нет, но даже в случае этих самых твоих кастов
ARP/SARP всё равно действуют.
Ну и что касается DVB
https://tools.ietf.org/html/rfc4947#section-4.2.14.2.1. IP/MAC Notification Table (INT) and Its Usage
The INT provides a set of descriptors to specify addressing in a DVB
network. The use of this method is specified for Multiprotocol
Encapsulation (MPE) [ETSI-DAT]. It provides a method for carrying
information about the location of IP/L2 flows within a DVB network.
A Platform_ID identifies the addressing scope for a set of IP/L2
streams and/or Receivers. A Platform may span several Transport
Streams carried by one or multiple TS Multiplexes and represents a
single IP network with a harmonized address space (scope). This
allows for the coexistence of several independent IP/MAC address
scopes within an MPEG-2 Network.
The INT allows both fully-specified IP addresses and prefix matching
to reduce the size of the table (and hence enhance signalling
efficiency). An IPv4/IPv6 "subnet mask" may be specified in full
form or by using a slash notation (e.g., /127). IP multicast
addresses can be specified with or without a source (address or
range), although if a source address is specified, then only the
slash notation may be used for prefixes.
In addition, for identification and security descriptors, the
following descriptors are defined for address binding in INT tables:
(i) target_MAC_address_descriptor: A descriptor to describe a
single or set of MAC addresses (and their mask).
(ii) target_MAC_address_range_descriptor: A descriptor that may be
used to set filters.
(iii) target_IP_address_descriptor: A descriptor describing a single
or set of IPv4 unicast or multicast addresses (and their mask).
(iv) target_IP_slash_descriptor: Allows definition and announcement
of an IPv4 prefix.
(v) target_IP_source_slash_descriptor: Uses source and destination
addresses to target a single or set of systems.
(vi) IP/MAC stream_location_descriptor: A descriptor that locates an
IP/MAC stream in a DVB network.
The following descriptors provide corresponding functions for IPv6
addresses:
target_IPv6_address_descriptor
target_IPv6_slash_descriptor
and target_IPv6_source_slash_descriptor