ErrLookup › slackhq/nebula

slackhq/nebula

A scalable overlay networking tool with a focus on performance, simplicity and security · Go · 176 source files

Analyzed at dd8f660c0a on 2026-09-03. 466 documented errors.

Code / MessageTypeSeverityTags
no connection manager
validation critical config, nebula, startup, wiring
ErrPeerRejected
remote address is not within a network that we handle
 error_code warning firewall, packet-drop, vpn-peer, nebula
ErrInvalidRemoteIP
remote address is not in remote certificate networks
 error_code error firewall, ip-spoofing, certificate, packet-drop
could not parse rule
validation error configuration, yaml, firewall-rules, parse-error
curve of in-pub does not match ca
console error pki, certificate-signing, curve-mismatch, nebula
unable to determine IP version from packet
exception error freebsd, tun, packet-format, ipv6, network
ErrInvalidLocalIP
local address is not in list of handled local addresses
 error_code error firewall, routing, configuration, packet-drop
ErrPublicKeyMismatch
public key mismatch between certificate and handshake
 error_code critical handshake, certificate, public-key, security
ErrNoMatchingRule
no matching rule in firewall table
 error_code warning firewall, access-control, default-deny, rule-mismatch
CoInitializeEx
exception error windows, com, network
could not calculate alternate fingerprint to verify
validation error certificate, fingerprint, p256, signature
hostmap LocalIndex ' ' does not match RelayState LocalIndex
error_code warning relay, hostmap, state-inconsistency, nebula
IEnumNetworkConnections.Next
exception error windows, com, winapi, enumeration
could not find hostinfo
exception warning nebula, hostmap, relay, vpn, diagnostics
failed to enable offload on multiqueue tun fd
exception error network, tun, linux, ioctl
ErrTruncatedPEMBlock
truncated PEM block
 error_code error pem, certificate, parsing, go
INetworkListManager.GetNetworkConnections
exception error windows, com, network-list-manager, winapi
unable to unmarshal pubkey
exception error go, noise-protocol, ecdh, key-parsing
rule # ;
validation error go, firewall, config, port-range
ErrIndexAllocation
failed to allocate local index
 error_code error handshake, resources, index-allocation
ErrPublicPrivateKeyMismatch
public key and private key are not a pair
 error_code error
${ce.Context}
exception error nebula, error-wrapping, contextual-error, go
public key in cert and private key supplied don't match
exception error certificate, ed25519, key-mismatch, crypto
bad IPv4 IHL
exception error network, ipv4, checksum, packet-parsing
error while reading ca-crt
console error
unsupported version
exception error lighthouse, certificate-version, protocol-compatibility
invalid mask
validation error config, yaml, cidr, network
ErrIPv6PacketTooShort
ipv6 packet is too short
 error_code warning network, ipv6, packet-parsing, firewall
error while reading in-pub
console error
failed to run tun device
exception error network, darwin, ioctl, tun-device
add v4 filter
exception error windows, wfp, firewall, network
recombine cert
exception error handshake, certificate, curve-mismatch
ErrPublicPrivateCurveMismatch
public key does not match private key curve
 error_code error
FwpmEngineOpen0: 0x
exception error wfp, windows, bfe, firewall, privileges
multiple udp listeners not supported on windows
exception error windows, udp, unsupported-feature, configuration
bytes did not contain a proper nebula encrypted…
exception error pem, banner-mismatch, key-management, go
failed to create route.RouteMessage
exception error freebsd, routing, route-message, serialization, network
ErrUnexpectedContent
received unexpected handshake content
 error_code error handshake, protocol, noise
%w: %w
exception error handshake, index-allocation, resource-exhaustion
error while unmarshaling cert
console error parsing, pem, certificate, nebula-cert
handshake message index
exception error
ErrIncompleteHandshake
handshake completed without receiving required content
 error_code error handshake, protocol, noise
invalid certificate
error_code error pki, certificate, type-assertion
path resolves to the sandbox directory itself
validation error path-validation, ssh-debug, security, nebula
relay hostinfo is no longer in the hostmap
exception error relay, hostmap, race-condition, nebula
salt must be at least 128 bits
exception error crypto, argon2, salt, validation
curve in cert and private key supplied don't match
error_code error certificate, curve-mismatch, signing, key-type
ErrMachineFailed
handshake machine has failed
 error_code error handshake, state-machine, noise
error while getting public key with PKCS#11
console error pkcs11, hsm, pki, nebula
failed to set tun device head
exception critical netbsd, tun, ioctl, network
failed to get tun address list
exception error network, tun, linux, netlink
invalid passphrase or corrupt private key
exception critical encryption, passphrase, aes-gcm, decryption
packet is too short
exception warning linux, virtio, tcp, packet-parsing, network
path is outside the sandbox directory
validation error path-validation, ssh-debug, security, nebula
ErrInvalidPEMX25519PrivateKeyBanner
bytes did not contain a proper X25519 private key banner
 error_code error pem, x25519, key-parsing, config
unknown tun.network_category
validation error windows, configuration, tun, network-category
error rx.Open()
exception error windows, udp, rio, network
unable to discover link_addr for tun interface
exception error freebsd, tun, interface-lookup, network-config
INetwork.SetCategory
exception error windows, com, winapi, privileges, network-category
( )
exception info error-handling, wrapping, logging
entry .gateway in tun.unsafe_routes
validation error
failed to set tun v4 address
exception error network, darwin, ipv4, ioctl, address-assignment
config ' .
validation error nebula, config, error-wrapping, calculated-remotes
ErrCertPubkeyPresent
certificate has unexpected pubkey present
 error_code error
ErrAsymmetricCipherKeys
noise produced only one cipher key
 error_code critical handshake, noise, cryptography
input did not contain a valid PEM encoded block
exception error pem, parsing, key-management, go
ErrExistingHostInfo
existing hostinfo
 error_code info handshake, hostmap, race-condition
no issuer in certificate
validation error certificate, issuer, ca-lookup
ErrUnknownNetworkType
unknown network type
 error_code error firewall, packet-processing, go
errAdapterNotFound
adapter not present in network connections enumeration
 exception warning windows, network, com, network-category
Send ring corrupt
exception critical nebula, wintun, windows, tun, ring-buffer
entry .route in tun.routes is not contained within the…
validation error config, validation, routing
use of Curve25519 is not allowed in FIPS 140-only mode
validation error fips, crypto, curve25519, pki
ErrPacketTooShort
packet too short
 error_code warning network, handshake, malformed-packet
ErrPrivateKeyEncrypted
private key must be decrypted
 error_code error
failed to apply logging config
exception error
ErrNoTerminal
cannot read password from nonexistent terminal
 error_code error terminal, password, stdin, automation
unsupported sock type: %T
exception warning udp, linux, localaddr, sockaddr, unreachable
%w: %v
exception error handshake, certificate, version-mismatch
error while marshalling certificate
console error go, cli, certificate, pem
error while setting up graphite sink
exception error config, stats, graphite, dns, network, nebula
error while writing out-pub
console error filesystem, file-write, nebula-cert
ca-key is encrypted and must be decrypted interactively
console error encryption, tty, passphrase, ca-key, nebula-cert
invalid curve
error_code error certificate, curve, signing, misconfiguration
ErrMultiMessageUnsupported
multi-message handshake patterns are not yet supported by the manager
 error_code error handshake, unsupported-feature, noise-protocol
entry .gateway in tun.unsafe_routes
validation error
config ` .interfaces` has invalid value (type %T)
validation error config, validation, interfaces, allowlist
ErrAlreadySeen
already seen
 error_code warning replay-attack, crypto, packet-processing
entry .gateway in tun.unsafe_routes
validation error
newTunFromFd not supported in FreeBSD
exception error freebsd, tun, unsupported-platform, file-descriptor
ErrNoCredential
no handshake credential available for cert version
 error_code error handshake, credentials, configuration
CoCreateInstance(NetworkListManager)
exception error windows, com, network
failed to create route.RouteMessage for change
exception error openbsd, routing, route-socket, serialization
must be using user device
validation error service, device, nebula, tun
notImplemented
not implemented
 error_code error hsm, pkcs11, build-tags, stub, cgo
ErrUnknownSubtype
unknown handshake subtype
 error_code error handshake, protocol, versioning
refusing to overwrite existing CA key
error_code error filesystem, safety, cli, overwrite-guard
failed to make read call for tun
exception error netbsd, tun, read, syscall
refusing to sign, root certificate does not match private…
console error
create TUN device failed
exception critical windows, tun, wintun, network-interface