Documentation
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Overview ¶
Package ripng decodes RIPng (RFC 2080) — the IPv6 distance-vector routing protocol (UDP 521). It is the IPv6 sibling of the project's internal/rip (RIPv1/v2, IPv4): a routing-reconnaissance and route-injection surface. RIPng has no authentication of its own, so a captured Response reveals the routes a router advertises (each IPv6 prefix, its route tag and hop-count metric) and, because the protocol trusts any Response on the segment, an attacker on-link can inject or blackhole routes — decoding the advertisement is the first step of auditing that exposure.
Wrap-vs-native judgement ¶
Native. RIPng is a 4-byte header (command / version / reserved) followed by an array of fixed 20-byte route table entries (128-bit prefix / route tag / prefix length / metric). A byte-field read + an array walk; stdlib only (net for the IPv6 formatting), no new go.mod dep.
Verifiable / no confidently-wrong output ¶
The header and the route-table-entry layout — including the two special entries of RFC 2080: the next-hop RTE (metric 0xFF, the prefix field carries a next-hop address) and the infinity metric (16, an unreachable route) — were verified field-for-field against scapy's RIPng layer (scapy.contrib.ripng). Nothing is heuristically guessed; every byte maps to a defined field.
Index ¶
Constants ¶
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Variables ¶
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Functions ¶
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Types ¶
type Entry ¶
type Entry struct {
IsNextHop bool `json:"is_next_hop"`
NextHop string `json:"next_hop,omitempty"`
Prefix string `json:"prefix,omitempty"`
PrefixLength int `json:"prefix_length,omitempty"`
RouteTag int `json:"route_tag,omitempty"`
Metric int `json:"metric,omitempty"`
MetricName string `json:"metric_name,omitempty"`
}
Entry is one decoded RIPng route table entry.
type Result ¶
type Result struct {
Command int `json:"command"`
CommandName string `json:"command_name"`
Version int `json:"version"`
Entries []Entry `json:"entries"`
WholeTableRequest bool `json:"whole_table_request,omitempty"`
Notes []string `json:"notes,omitempty"`
}
Result is the decoded view of a RIPng message.
Source Files
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